How to prep a Whatnot show with 500+ items: a step-by-step checklist

Why prep matters more at 500+ items

Below ~150 items, you can run a Whatnot show by feel. You know what's in your bins, you remember pricing, you can grab anything in 30 seconds. Above 500 items the math changes. The cost of an unprepped show shows up in three specific ways:

• Dead air on stream. When you have to dig for an item on camera, viewers leave. Whatnot's algorithm punishes low-engagement minutes — a 20-second hunt costs you 4 hours of future visibility.
• Oversells. If the same SKU is live on eBay and you sell it on Whatnot, the eBay buyer wins by timestamp and you have to cancel the Whatnot sale (or vice versa). Both refunds hurt your seller metrics on both platforms.
• Pricing inconsistency. Pricing 60 items live, on the fly, while reading chat = at least 5 wrong prices per show. Some you overshoot (no buyer); some you undershoot (margin walks out the door).

The checklist below is structured around eliminating those three failure modes. It assumes you're running a 60-90 minute show with 50-80 items from a 500+ item catalog.

7 days before: pick a theme and lock the roster

The single highest-leverage decision is the show theme. A themed show ("vintage 70s rock tees", "WCG-graded vintage Pokemon", "estate-sale sterling silver") outperforms a "general inventory" show by 2-3x on average viewer-time and conversion. A theme tells the algorithm who to show your stream to, tells the buyer why to stay, and tells you which 60 items to pull.

Picking the theme

Look at your last 90 days of sales. Group by category, brand, decade, or price band. The categories that sold fastest at the highest margin — those are your theme candidates. Don't pick a theme based on what you have a lot of; pick based on what your buyers want a lot of.

Auto-curation: the manual way

Filter your spreadsheet (or item table) to items matching your theme. Sort by estimated price descending. Take the top 80, then trim to 60 by removing anything with photo issues, missing measurements, or a status that isn't "ready to ship today."

Auto-curation: the SellDeck way

On the show planning page, type your theme into the auto-curate box — "vintage tees, 70s rock, sized M-L" — and SellDeck pulls a candidate roster of 60 items from your live catalog using AI matching on titles, descriptions, and tags. You review, swap, and lock the list in about 5 minutes instead of an hour. This is the part of show prep that we built specifically because we got tired of spreadsheets at 700 items.

The day before: prep sheets, photos, descriptions

Once your roster is locked, the goal of the day before is to make sure everything you need to say about each item is one glance away during the live. Resist the temptation to ad-lib pricing or condition; the show that runs over 90 minutes is the show where you start ad-libbing.

The prep sheet

For each of your 60 items, you need:

• A photo (so you can confirm the right item is in your hand on stream)
• The opening price (the floor, not the suggested retail)
• Condition notes (defects, sizing, completeness)
• Any cross-listing IDs (so you can mark it sold across platforms after)
• Bin location (the difference between a 5-second pull and a 30-second hunt)

A printed prep sheet — paper, in your hand, on a clipboard — beats every digital alternative we've tested. Looking at a screen pulls your eyes off camera. Looking at a paper sheet on the desk in front of you doesn't. If you're using SellDeck, the show prep page exports a one-page-per-15-items PDF with QR codes you can scan to mark items sold without typing. If you're using a spreadsheet, print the relevant columns to PDF, use a small font, and accept that you'll need 4-5 sheets for a 60-item show.

The pre-stream photo audit

The morning of the show, walk through every item on your roster physically. Pull it out of the bin, confirm it matches the photo, set it on your prep table. Anything that doesn't match (wrong size, missing piece, condition worse than recorded) gets swapped out and replaced from your reserve list. Plan for ~10% swap rate; that's normal.

An hour before going live: the cross-listing pause

This is the most important section in this entire post. The single biggest failure mode for multi-channel Whatnot sellers is selling the same SKU twice — once on Whatnot live, once on eBay or Etsy mid-stream. When that happens, you eat a refund on one side, your seller metrics take a hit on both, and you spend an hour after the show apologizing.

The fix is mechanical: before you go live, pause the listing on every other marketplace. After your show ends, resume them. Two minutes of automation saves a $50 refund and a defect on your account.

Doing this manually

Open eBay. Open Etsy. Open Depop. For every item in your show roster, find the corresponding listing and end it (eBay) or unpublish it (Etsy / Depop). After the show, relist each one. With 60 items across 3 marketplaces, that's 360 manual operations spread across 3 dashboards. Some sellers automate this with browser extensions (SellerAider does relisting on Depop, Vinted, Poshmark; not eBay or Etsy in the same workflow).

Doing this with SellDeck

Click "Going Live" on your show. SellDeck pauses every cross-listing for items in your show roster across eBay, Etsy, and Depop in under 60 seconds via the marketplace APIs. After your show ends, click "Show Complete" and SellDeck relists the unsold ones automatically. Items you actually sold on Whatnot stay paused (they're sold, not unavailable), so you don't have to remember which is which.

If you're shopping for tools and you only sell on Whatnot occasionally, this feature alone is the reason to consider SellDeck. If you sell primarily on Poshmark / Depop and Whatnot is a side channel, you may not need it — pick the tool that matches the platform you live on.

During the show: tracking sold items

Sounds simple; isn't. When 8 items sell in a 60-second giveaway burst, tracking which sold-to-whom in your spreadsheet is impossible. You need a flow that doesn't require typing.

• Camera-side checklist. Have a printed roster on your desk with checkboxes. As soon as an item sells, check the box. Don't write the buyer name; you'll get that from Whatnot's order export after the show.
• Per-item shipping bin. Drop each sold item into a pre-labeled bin. We use 60 numbered bins matching the 60 prep-sheet rows. Item 23 sells → into bin 23. After the show, every bin with something in it is an order to ship; every empty bin is an item that didn't sell.
• QR scan if your tool supports it. If your prep sheet has QR codes (SellDeck and a couple of others print these), point your phone at the code and tap "sold." Faster than checkbox, exact, and keeps the inventory state updated in real time so you don't have to reconcile later.

After the show: reconciliation and relisting

The show ended; the work isn't done. Within 24 hours you need:

1. Whatnot order export. Pull the order CSV from your Whatnot dashboard. This is the source of truth for who bought what.
2. Mark items sold in your inventory system. Update your spreadsheet / app so the 38-of-60 items that sold are flagged sold and the 22 unsold ones go back to "live" status.
3. Resume cross-listings on the unsold items. The 22 items that didn't sell need to go back live on eBay, Etsy, Depop — wherever you had them before the show. Failing to do this is leaving money on the table.
4. Reconcile the financial side. Whatnot's payout doesn't arrive for a week or two. When it does, the weekly report has fees, refunds, tips, and shipping collected as a single combined amount — not per-order. You need to allocate those numbers back to individual orders if you care about per-show or per-item profit. This is one of the things SellDeck does automatically (we parse the Whatnot weekly report and reconcile against the order data we already have); without that, it's an hour of spreadsheet work per payout cycle.
5. Capture lessons. Which items underperformed? Which chat segments killed momentum? What was the average order value? File this somewhere you'll re-read before the next show.

The one-page checklist

Where SellDeck specifically saves time

We try to be honest about which steps actually need software. Here's what we automate that's hard to do otherwise:

• Auto-curate a 60-item roster from a theme — type "vintage band tees" and pull candidates in 30 seconds instead of an hour of filtering.
• Cross-listing pause/resume during live — one click pauses eBay, Etsy, Depop listings for your roster; one click resumes the unsold ones after.
• QR-coded prep sheets — scan to mark sold; no spreadsheet typing while you're on stream.
• Whatnot weekly report parsing — fees, tips, refunds, shipping collected, all reconciled to individual orders automatically.
• Browser extension for real-time order/payout sync — no CSV downloads; data flows in as you browse Whatnot.

Everything else on this checklist you can do with paper, scissors, and a spreadsheet. We've tried; it works, it just takes longer. If you're below 300 items, the manual workflow is fine. Above 500, the time tax on doing this by hand is what eventually pushed us to build the tool.