Comparison
Most eBay repricers will chase the lowest price until your margin disappears. Undercut takes the opposite approach: you set a hard floor per listing — a price it will never cross — and then the engine works downward from there to beat the current cheapest competitor. Compared to Price Spectre, Undercut adds a free tier with no credit card required, so you can validate the tool on 25 live listings before spending a dollar. If protecting margin is your first concern, the architecture is built around that from day one.
| Feature | Undercut | Price Spectre |
|---|---|---|
| Free tier (no card) | Yes — 25 listings, no expiration, no card required | Not advertised as of 2026 |
| Per-item hard floor | Yes — core feature, enforced on every reprice cycle | Supported — rule-based floor settings available |
| Repricing speed (fastest plan) | 15-minute cycles (Pro and Scale plans) | Varies — check current plan details on their site |
| AI aggressiveness tuning | Yes — Pro and Scale ($79) plans | Varies |
| Listing cap at entry paid tier | 100 listings at $29/mo (Starter) | Varies — see their current pricing page |
| Setup complexity | Single Floor Price field per listing, set in the dashboard; most catalogs under 500 SKUs migrate in under an hour | Supported — rule-based import available; complexity varies by catalog size |
Feature positioning reflects publicly available information as of 2026. Plans and features change frequently — verify current details on each vendor's site before purchasing. Price Spectre and its associated trademarks are the property of their respective owners. Undercut is not affiliated with Price Spectre.
A hard floor is a per-item minimum price that Undercut will never reprice below, no matter what competitors do. You calculate it once per SKU and Undercut enforces it automatically on every reprice cycle.
Worked example — a used electronics accessory: - Cost of goods: $8.00 - Shipping: $4.00 - eBay final value fee (13.25%): ~$2.25 on a $17 sale - Minimum margin target: 15%
Floor calculation: ($8.00 + $4.00) / (1 − 0.1325 − 0.15) ≈ $17.14
You enter $17.14 as the floor. If every competitor drops to $14, Undercut holds at $17.14 and stops — it does not follow the market off a cliff. This is the core reason sellers who have burned margin with aggressive repricers switch to a floor-first tool.
The table below compares the two tools on the dimensions that matter most to mid-volume eBay sellers. Where we do not have current first-party data on Price Spectre, we say so plainly.
One of the most common complaints about switching repricers is migration friction — re-entering floors for hundreds of listings. Undercut keeps setup simple: a single Floor Price field per listing, set in the dashboard, so the typical onboarding path is:
1. Connect your eBay account and pull in your active listings. 2. Set each listing's Floor Price in the dashboard — or use Undercut's floor calculator to suggest one based on cost + fee inputs you provide. 3. Repricing begins within minutes.
Price Spectre's setup process is documented in their own help center; our sellers who migrated report the Undercut path took under an hour for catalogs up to 500 SKUs. Your experience will vary by catalog complexity.
Repricing speed determines how quickly you capture a price drop or recover when a competitor goes out of stock. Undercut's plan speeds are:
- Free & Starter: Hourly repricing - Pro ($79/mo, up to 1,000 listings): 15-minute repricing cycles - Scale ($199/mo, up to 10,000 listings): 15-minute repricing cycles, plus priority support
Faster cycles matter most in competitive, high-velocity categories like consumer electronics, trading cards, and media. In slower categories like vintage or antiques, hourly cadence is usually sufficient and the Free plan handles it fine.
Price Spectre's repricing frequency varies by plan; check their current pricing page for exact cycle times before making a speed-based decision.
On the Pro and Scale plans, Undercut adds AI aggressiveness tuning — a per-listing setting that adjusts how quickly and how far the engine moves toward that listing's floor. A conservative setting makes small, slow moves to avoid triggering a price war. An aggressive setting moves faster toward the floor. It never overrides the floor and never goes below it.
Because it is set per listing, you can tune each item to match its own competitive dynamics: set a fast-moving electronics listing aggressive, set a collectible conservative, and let each one behave appropriately without manual intervention.
Try Undercut on up to 25 live eBay listings today. Your hard floor is enforced from the first reprice — margin protected before you spend a dollar.
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Can I bring my existing Price Spectre floors into Undercut?
Undercut does not import rules from Price Spectre. You set each listing's Floor Price directly in the Undercut dashboard, so if you already have your floors recorded you simply enter them per listing. Most migrating sellers complete this in under an hour for catalogs under 500 SKUs.
Does Undercut reprice against Price Spectre users specifically, or all eBay sellers?
Undercut reprices against the current lowest-priced active listing on eBay for each item, regardless of what repricing tool the competitor uses. It does not target or exclude specific sellers by their software vendor.
What happens if I set a floor and every competitor is already below it?
Undercut holds your listing at the floor and stops. It will not reprice below the floor under any circumstances. Your listing may not be the cheapest in that moment, but your margin is protected. If competitors sell out at those low prices, Undercut will adjust upward as the competitive landscape changes.
Is the 14-day trial the full Pro experience or just the Free plan?
The 14-day trial gives you access to the plan tier you sign up for with no credit card required. You can test Pro features including 15-minute cycles and AI aggressiveness tuning during the trial, then decide whether to continue at that tier or step down to a lower plan.
Does Price Spectre have a free tier?
As of mid-2026, Price Spectre does not advertise a permanent free tier. Undercut's Free plan supports 25 active listings indefinitely with no expiration and no card on file, making it a lower-commitment entry point for sellers who want to test repricing before committing budget.
Related: What Is a Price Floor? · How to Avoid Selling Below Cost on eBay · Repricing Without Losing Margin · Setting an eBay Price Floor: Step-by-Step · Free eBay Repricer Options Compared