Short answer: the price of a professional online store depends on scope — from a digital catalogue with WhatsApp ordering to a full e-commerce build with cart, payment gateway and inventory. There is no fixed price: the product catalogue, payment methods, fiscal integrations and inventory automation level all define the real size of each project. The honest approach is to understand which layer your business actually needs before committing to a budget.
The question almost nobody asks before buying is whether they really need a full cart on day one, or whether a well-built catalogue plus WhatsApp can sell just as well (or faster) while the business is still validating demand.
What determines the price of an online store?
E-commerce cost doesn't depend only on "how many products it has". It comes down to four factors:
| Factor | Impact on price | Example |
|---|---|---|
| Ordering method | High | Order confirmed over WhatsApp vs. cart with automatic checkout |
| Payment gateway | High | No online payment vs. Mercado Pago integrated with card, cash and transfer |
| Inventory management | Medium | Static catalogue vs. stock that updates itself with every sale |
| Number of products and variants | Medium | 20 products with no variants vs. 500 products with size, colour and per-variant stock |
A basic catalogue and a store with a cart and inventory can look similar at a glance, but the real difference is how many of these layers the build automates and how many still depend on someone reviewing every order by hand.
Market reference pricing by store type in 2026
The ranges below reflect typical market prices by project type:
| Store type | What it includes | Market range |
|---|---|---|
| Digital catalogue + WhatsApp ordering | Products with photos and price, direct WhatsApp button, no online payment | Varies widely by provider |
| Store with basic cart | The above + shopping cart + payment gateway (Mercado Pago) | $1,500-$2,500 |
| Store with inventory and variants | The above + automatic stock management, product variants, coupons | $2,500-$4,000 |
| Enterprise e-commerce | ERP integrations, multiple locations, automated shipping | $4,000+ (quoted) |
At Fluxr, every online store project is built through Custom Development: there is no list price because the catalogue, payment methods, fiscal integrations and inventory all define the real scope of the project. The requirements session is free — that's where we establish exactly what you need and put together the quote. If your volume already justifies automatic payment and inventory, request a quote with the exact scope.
Catalogue with WhatsApp vs. full cart: which comes first?
| Aspect | Catalogue + WhatsApp | Cart + payment gateway |
|---|---|---|
| Upfront cost | Lower upfront cost | $1,500-$4,000 (market reference) |
| Time to launch | Days | Longer (depends on catalogue and integrations) |
| Payment confirmation | Manual, over chat | Automatic, no human involved |
| Best for | Validating demand, small catalogues, businesses already selling well over chat | High order volume that can no longer be handled by hand |
| Customer data for remarketing | Limited | Complete (purchase history, abandoned cart) |
The honest maths: if you're selling fewer than 20-30 orders a week today, a catalogue with WhatsApp probably converts just as well as a full cart, at a fraction of the cost and the wait. The cart pays for itself once manual order volume starts producing errors or eating too much of the team's time.
Marketplace vs. your own store: the commission maths
Plenty of businesses start out selling only on a marketplace and postpone their own store, but that carries a cost that grows with sales:
| Aspect | Marketplace only | Your own online store |
|---|---|---|
| Commission per sale | 10-20% on most platforms | 0% — payment goes straight to your account |
| Control of design and brand | Limited to the marketplace template | Total |
| Customer data | Retained by the marketplace | Yours, for remarketing and retention |
| Visibility | Depends on the internal algorithm | Depends on your own traffic (social, Google, WhatsApp) |
If a store bills $5,000 USD a month on a marketplace at 15% commission, that's $750 USD a month — more than the upfront cost of many custom-built stores with a cart in under six months. This doesn't mean abandoning the marketplace (it's still a valid channel), it means not depending on it alone as volume grows. We develop this same real-cost vs. third-party-platform analysis in more detail in how much a professional website costs.
When a full cart is NOT worth the investment yet
Honesty matters here too: if your business sells fewer than 10 products, doesn't have final photos or descriptions yet, or order volume is so low that a WhatsApp chat handles it without friction, a $2,000+ cart is money better spent on marketing or inventory first. Building the full cart before validating which products actually sell means paying twice: once now, and again when the catalogue has to be reorganised.
It's also not worth it if the business depends 100% on in-person sales and the online store would just be a shop window with nobody handling digital orders — in that case, prioritising a chatbot to staff WhatsApp usually returns more than e-commerce does.
How to work out whether the store pays for itself
Before settling on an investment level, it's worth estimating how many extra orders a month you need for the cart to pay off in the first few months. Fluxr's ROI calculator runs that maths with your real average order value, and the plan comparison shows how to pair the store with a text agent that confirms orders automatically over WhatsApp while you sleep.
How to get started
- Custom development at Fluxr — quoted by scope, free requirements session.
- Calculate the return with the ROI calculator using your average order value and order volume.
- Need a full cart, inventory or custom integrations? Message us on WhatsApp and we'll put a quote together the same day.
Pricing verified as of August 2026. Fluxr Pro builds AI voice agents, private chatbots, automations and websites for businesses worldwide — native support in English, español and português.