Comparison
SKU Grid was built for dropshippers who need to sync supplier stock and cost data across hundreds of sources. If you are an eBay seller who already owns your inventory and just needs prices to stay competitive — without ever dipping below what you paid — SKU Grid is solving a different problem than yours. Undercut focuses on one thing: repricing your live eBay listings to beat the lowest competitor, automatically, while respecting a hard per-item floor you control. No supplier feeds required. No card needed to start.
| Feature | Undercut | SKU Grid |
|---|---|---|
| Primary use case | Floor-safe repricing for owned-inventory eBay sellers | Supplier monitoring + repricing for eBay dropshippers |
| Per-item hard floor | Yes — set individually per listing, based on your cost | Floor logic tied to supplier cost-sync workflow |
| Supplier / stock feed sync | Not included — built for sellers who own their inventory | Core feature — monitors supplier price and stock changes |
| Free plan, no credit card | Yes — 25 listings, 14-day trial, no card required | Trial available; card requirement varies by plan |
| Repricing speed | 15 min (Pro and Scale) | Varies by plan |
| AI aggressiveness tuning | Yes — Pro and Scale plans | Supported |
Feature positioning reflects publicly available information as of 2026. SKU Grid is a trademark of its respective owner. Undercut is not affiliated with SKU Grid.
Most repricing tools let you set a global minimum price. Undercut lets you set a floor on each individual listing, calculated around your actual cost structure. Consider a used electronics item: cost $8, shipping $4, eBay fees 13.25%, and your minimum margin target of 15%. Working through the math — total cost basis is $12, fees on the sale price add roughly $1.59 at a $12 price point, and a 15% margin on cost requires about $1.80 profit — your floor lands at approximately $14.93 to $15.40 depending on final fee rounding. In Undercut you enter that number once per listing. The repricer will go as low as that number to win the sale, and will never go lower, regardless of what a competitor does. SKU Grid's floor logic is tied to its supplier cost-sync workflow, which is purpose-built for dropship margin math, not for owned-inventory sellers working from their own cost records.
SKU Grid is a mature platform built around supplier monitoring: it watches your supplier listings for price and stock changes, and pushes updates to your eBay listings automatically. For high-volume dropshippers managing dozens of supplier sources — where the primary risk is selling an out-of-stock item or losing money because a supplier raised their price — SKU Grid addresses real operational pain. It supports repricing as part of that workflow. If your business model depends on supplier-synced cost data flowing into your price rules automatically, SKU Grid is a purpose-fit tool. Undercut does not replace that workflow and does not claim to.
If you source your own inventory — wholesale, retail arbitrage, liquidation, or your own manufactured goods — you already know your cost. You do not need supplier monitoring. What you need is a repricer that reacts quickly to competitor price changes, respects your margin floor, and does not require you to learn a platform designed for a different business model. Undercut's Pro plan reprices every 15 minutes and adds AI aggressiveness tuning, which lets you dial in how quickly and how deeply the tool chases a lower competitor. Scale also reprices every 15 minutes and adds priority support for sellers running up to 10,000 active listings. The Free plan covers 25 listings with no credit card, so you can verify it works on your actual listings before spending anything.
The table below compares the two tools on the dimensions that matter most to an eBay seller who owns their inventory. Both tools reprice eBay listings, but they approach the problem from different starting points. Undercut's design prioritizes margin safety and simplicity; SKU Grid's design prioritizes supplier-feed automation. Neither tool is objectively better — they are built for different seller profiles.
Choose SKU Grid if your eBay business is built on dropshipping from tracked supplier sources and you need automated cost-and-stock sync as the foundation of your repricing logic. Choose Undercut if you own your inventory, know your per-item cost, and want a repricer that keeps you competitive without requiring you to adopt a full dropship operations platform. The 14-day free trial (no card) means you can run Undercut alongside your current workflow and check whether the floor-safe repricing logic works for your catalog before committing to a paid plan.
Start free with 25 listings — no credit card needed. See exactly how your hard floor protects your margin before you spend a dollar.
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Can I switch from SKU Grid to Undercut without rebuilding all my listings?
Yes. Undercut connects to your existing eBay listings directly — there is no import or migration step. You add your floor price per listing inside Undercut, and the repricer starts working on your live catalog. You do not need to recreate or relist anything.
Does Undercut handle supplier cost syncing the way SKU Grid does?
No, and it does not try to. Undercut is built for sellers who already know their cost and set their own floor per item. If your workflow depends on pulling live cost updates from a supplier API or scraper, SKU Grid is the tool designed for that. Undercut assumes you are managing your own cost data.
How do I calculate the right floor price for a listing before entering it in Undercut?
Add your item cost, your actual shipping cost, and eBay's fee percentage (typically 13.25% for most categories, plus a $0.30 fixed fee), then add your minimum acceptable margin on top. For example: item cost $8, shipping $4, eBay fees ~13.25% of sale price, 15% margin target gives you a floor in the $15 to $15.50 range. Undercut's pricing guide and the eBay profit calculator linked below walk through this in detail.
What happens in Undercut when a competitor drops below my floor?
Undercut holds your listing at your floor price and does not follow the competitor lower. You remain visible in search at your floor price. If the competitor later raises their price above your floor, Undercut reprices back up automatically to stay just below them.
Is SKU Grid cheaper than Undercut?
SKU Grid's pricing depends on listing volume and the supplier monitoring features included. Undercut starts free (25 listings, no card), with paid plans from $29/mo. For owned-inventory sellers who do not need supplier syncing, Undercut's Starter plan is likely lower cost — but check both tools' current published pricing before deciding, as plans change.
Related: What Is a Price Floor? · How to Avoid Selling Below Cost on eBay · Repricing Without Losing Margin · eBay Profit Calculator · eBay Repricing for Beginners