CustomCat’s pitch is refreshingly blunt compared to most marketplaces on this list: no percentage cut, ever. You are charged the wholesale base cost of a product plus shipping when a sale happens, and you keep every cent you price above that. There is no 10 percent, no tiered platform fee eating into your margin.

What CustomCat does not give you, though, is a place to actually sell. Like several other fulfillment providers, it is a backend that plugs into a store you already have to build and pay for elsewhere, typically Shopify, Etsy, WooCommerce, or BigCommerce.

As of 2026, that combination, genuinely fee-free product pricing paired with a genuine dependency on a separate storefront, is exactly what makes the comparison to Sellvia’s all-in-one flat fee worth walking through carefully.

This guide breaks down what CustomCat actually charges, where its no-cut pricing and fast US production genuinely earn their reputation, and what a realistic total setup costs once the storefront it depends on is added back into the picture.

What is CustomCat, and how does its no-percentage pricing actually work?

CustomCat is a print-on-demand fulfillment company founded in 2015 and based in Detroit, Michigan, shipping over 40,000 units a day for more than 50,000 businesses worldwide. It offers roughly 200 to 300 customizable products, apparel, hats, mugs, and home goods among them, using its own DIGISOFT printing technology alongside embroidery and dye sublimation.

Where CustomCat differs from a marketplace-style platform is its pricing logic: there is no percentage cut of your sale at all. You are charged the wholesale base cost of the product plus shipping only when an order actually comes through, and whatever you price above that is entirely yours to keep.

What CustomCat does not include is anywhere to actually sell those products; it exists purely as an integration inside a store you already run on Shopify, Etsy, WooCommerce, or BigCommerce.

*CustomCat’s Trustpilot page carries a small number of reviews, roughly 13 to 14, which is too small a sample to be fully conclusive, while its Shopify App Store rating sits meaningfully higher at 4.2 to 4.3 out of 5 across several hundred reviews, a much larger and more representative sample of actual sellers using the platform day to day.

Where CustomCat actually wins

CustomCat’s no-percentage pricing is a real, meaningful advantage over any platform that takes a cut of your markup, since your margin scales purely with how much above the wholesale cost you choose to price, not with a shrinking percentage the platform decides.

Its US-based production in Detroit is also genuinely fast, commonly cited around three business days, which matters for customers who care about delivery speed. Phone support, available weekdays, is an uncommon feature among fulfillment providers in this category, most of which rely on email or chat only.

For someone who already has a Shopify or Etsy store running and specifically wants a US supplier with straightforward, fee-free product pricing, CustomCat delivers exactly that.

Now put Sellvia next to that same picture. Founded in 2016 and based in Irvine, California, Sellvia removes the dependency CustomCat carries entirely.

Instead of a fulfillment tool that assumes a separate storefront is already built and paid for, it hands over a complete store that already exists: built, styled, and pre-loaded with a catalog of digital products, guides, courses, checklists, and AI-generated toolkits, that deliver instantly with no printing, shipping, or second platform involved at any point.

Where CustomCat solves the fulfillment half of the equation and leaves the store, traffic, and marketing to you, Sellvia is the whole equation, including a built-in ad system CustomCat has no equivalent for.

How does Sellvia compare to CustomCat?

This comparison only makes sense once CustomCat’s real total cost, the storefront it depends on plus its own product pricing, is counted alongside Sellvia’s single flat fee.

The percentage fee row is the one point where CustomCat and Sellvia are genuinely alike, since neither takes a cut of your markup the way Etsy or Redbubble do. The gap opens up everywhere else on this table, since CustomCat’s zero-commission pricing sits on top of a storefront you still have to build and pay for elsewhere.

Year-1 cost breakdown: Which is actually cheaper?

Take a seller doing a modest but real volume: 10 sales a month at an average of 25 dollars each, or 3,000 dollars in total sales across the year, running CustomCat’s free Lite plan connected to a Shopify Basic store.

The Shopify subscription itself runs 468 dollars for the year on monthly billing. On the Lite plan, a basic t-shirt costs around 9 dollars wholesale before shipping, leaving a margin in the 55 to 65 percent range on a 25 dollar retail price, since there is no percentage fee stacked on top.

On 3,000 dollars in sales, that works out to roughly 1,800 dollars in gross margin across the year. Subtracting the 468 dollar Shopify subscription and standard card processing fees, roughly 123 dollars, leaves a realistic net profit around 1,209 dollars, before any separate advertising spend, since neither CustomCat nor Shopify includes a built-in way to generate traffic.

Upgrading to CustomCat Pro at this volume would not pay for itself: the 20 to 40 percent product discount only outweighs the 360 dollar annual subscription past roughly 15 units a month, more than this example’s 10.

Sellvia’s total for the same year is the flat 468 dollar subscription, with no separate storefront to pay for, no per-order product cost since the products are digital, and a built-in ad system already included rather than a separate expense to budget for.

*Estimates built from CustomCat’s published wholesale pricing examples and Shopify’s published Basic plan cost as of 2026; your own totals will vary by product type, order volume, and which Shopify, Etsy, or WooCommerce plan you choose.

CustomCat’s own product margin is genuinely strong at this volume, since there is no commission stacked on top, and the real gap versus Sellvia comes entirely from the separate storefront subscription CustomCat depends on and the advertising spend neither platform includes.

What real users say: CustomCat vs Sellvia

Numbers only tell half the story, so here are two composite examples built from patterns that show up repeatedly across ecommerce forums and app review sections, illustrating how the tradeoff actually plays out a few months in.

Which platform is right for you?

Neither is the wrong choice for what it actually is, but they answer different questions: CustomCat assumes you already have a store, Sellvia assumes you do not.

Notice the deciding factor here is less about the fee structure itself, since CustomCat’s zero-commission pricing genuinely holds up, and more about whether you want one setup or two, and whether your volume actually justifies its paid tier.

What factors should you weigh before choosing?

Beyond the fee-free pricing headline, five practical questions tend to settle which path actually fits.

Run your own answers through those five questions honestly, and the choice between CustomCat and Sellvia usually comes down to whether you already have half the setup in place or would rather get the whole thing in one step.

Whichever way you are leaning, it is worth actually seeing what a single all-in-one setup looks like before assembling two separate platforms yourself, and that is exactly what a free trial is for.