How to Build Your E-commerce Website (Step by Step, From Costa Rica)

A serious e-commerce site takes 4 to 16 weeks to build, and it starts long before you pick a platform. Skip straight to Shopify without validating the product or wiring a local gateway and you will spend the first 90 days fixing decisions you made on day one.

Here is the actual order, step by step, building from Costa Rica.

Step 1: validate before you build

Before paying a dollar of development, get concrete answers to three questions:

• What does your product cost to produce or source, and at what price will you sell it?
• Who will buy it, and why from you instead of Amazon, Mercado Libre, or the shop down the street?
• How will that buyer learn you exist?

If the answers are vague, the platform does not matter. Sell 10 units over WhatsApp, Instagram, or a simple landing page before investing in e-commerce. We have watched clients drop $15,000 on a beautiful store that sold 4 orders in six months. The store was not the problem.

Step 2: domain and brand

Buy the .com if it is available. If not, a .cr or .co.cr works fine for a local Costa Rica audience. Registration runs through NIC.cr and costs around $35 per year.

Lock down your logo, color palette, and tone of voice before touching the platform. It does not need to be a $20,000 brand identity, but it does need to be coherent. Rebranding after you have uploaded the catalog hurts.

Step 3: pick the platform by size

This is where most founders get it wrong. The practical rule:

Managed Shopify: $3k-$8k setup + $50-$300/month for plan and apps. Works if you have fewer than 500 SKUs, sell relatively standard physical products, and do not need odd ERP or inventory integrations. The correct call for most stores starting out in Costa Rica.

WooCommerce on WordPress: $2k-$6k setup + $30-$150/month hosting. More control, but you own updates, plugins, and security. We recommend it when there is already a WordPress site running and the store is an addition, not the main business.

Custom e-commerce (Astro, Next.js, Medusa): $10k-$50k+. Right when Shopify is charging you $2,000-$5,000 a month in volume fees, or you need B2B flows, multi-warehouse logic, or deep accounting integration. Custom pays for itself in 12 to 18 months at that scale.

Headless with marketplace and mobile: six figures. When you are running a marketplace, multi-vendor catalog, or native apps sharing inventory with web. Not where you start.

For a deeper Shopify vs custom comparison, see Why You Should Have a Custom E-commerce Site.

Step 4: build the catalog right on day one

This is where most projects stall. The platform can be ready in 3 weeks, but the catalog will take 2 to 3 months if nobody planned for it.

What you need before loading products:

• Consistent photos (same background, same ratio, 1500x1500px minimum)
• Descriptions with real keywords people search on Google, not generic copy
• Categorization no more than 3 levels deep
• Variants (size, color) defined in a spreadsheet before anything goes up
• Unique SKUs your inventory system recognizes

A Google Sheet with five mandatory columns (name, SKU, price, category, description) saves weeks of rework later.

Step 5: local payment gateways

This is the difference between selling in Costa Rica and selling in theory. Stripe does not accept Costa Rican entities for receiving payouts. Full stop.

Real options:

• BAC Credomatic: largest bank, solid integration, slow certification (4-8 weeks). Best for higher volume.
• Promerica: similar to BAC, slightly different API, good fallback if BAC certification drags.
• Greenpay: the modern option, clear docs, 1-2 week integration. Our usual recommendation for new stores.
• PayPal: add it for international buyers, but it does not replace the local gateway.
• SINPE Movil: works for low-ticket items and customers who refuse to type a card. Manual today, but converts.

Full breakdown in Costa Rica payment gateways: BAC, Promerica, Greenpay compared and the technical walkthrough in Payment gateway integration: BAC, Promerica, Greenpay.

Step 6: shipping without surprises

Your gateway charges. Then somebody has to deliver. Options:

• Correos de Costa Rica: cheap, nationwide, slow. Fine for non-urgent.
• Servientrega, Aeropost, DHL Express CR: 24-72 hours, more expensive, trackable.
• In-house courier or Uber Direct inside the GAM: same day, full control, hard to scale.

Set up shipping zones from day one. “Free shipping nationwide” sounds great until you live in Heredia and have to ship to Limon. Show the buyer the real cost at checkout, not after.

Step 7: launch and the first 90 days

Launch is not the finish line. It is where the work starts. What breaks every time:

• Checkout fails on mobile in some odd combo (Safari iOS plus a BAC Visa, for example)
• Order confirmation emails land in spam
• Photos weigh 4MB and the page takes 8 seconds to load
• Inventory drifts and you sell something you do not have
• No analytics wired, so you have no idea where traffic came from

Before spending on ads, confirm the full funnel works on a laptop, an Android phone, and an iPhone. Run 20 real test transactions through the gateway sandbox. If one fails, you do not open.

Fatal mistakes we keep seeing

After several e-commerce builds from Costa Rica, the mistakes that kill stores in the first 90 days are always the same:

1. Picking the platform before knowing what you sell. The catalog dictates the platform, not the other way around.
2. No local gateway. PayPal-only means you lose half the Costa Rican market.
3. Zero traffic plan. A store with no ads, no SEO, no active social channels is a digital brochure.
4. Improvised maintenance. Shopify updates itself. WooCommerce and custom do not. With nobody minding the store, you have a security issue in six months.
5. Bad photos. It is the only thing the buyer sees. Spend $300-$800 on product photography before anything else.

What separates stores that grow from stores that stall in the first month

After launch, the stores that take off do 4 things the stalled ones do not:

• They measure for real. Google Analytics 4, Meta Pixel, and Hotjar wired up, with events for checkout, add-to-cart, and contact form. Without metrics, improvement is guesswork.
• They call their first 50 buyers. A 10-minute call with each one surfaces objections no focus group finds.
• They iterate every 2 weeks. Small constant changes, not full redesigns every 6 months.
• They run an active service channel. WhatsApp Business answered in under 5 minutes during business hours beats any “free shipping” banner.

Recurring monthly costs the budget keeps forgetting

Setup is just the entry fee. Monthly costs you will definitely pay:

• Platform (Shopify, WooCommerce hosting, cloud infra for custom): $30-$2,300
• Payment gateway: 3.5-5% of processed volume
• CDN and image optimization (if custom): $20-$200
• Transactional email (Resend, Postmark, SendGrid): $20-$150
• Email marketing (Klaviyo, Mailchimp): $30-$300 based on list size
• Support platform (Crisp, Tidio, or WhatsApp Business API): $30-$150
• Backups and monitoring: $20-$100
• Apps for shipping, reviews, taxes: $30-$200 depending on count

Add up $250-$3,500 monthly depending on scale. Budget for it on day one, not after the second-month invoice arrives.

If you want a broader take on building for the web, read our pillar What is web development? and the breakdown of website vs web app vs SaaS to figure out which category your project falls in.

Our e-commerce service covers all seven steps end to end, from validation through launch.

Send us your product details

If you want us to map out the plan for your store without you having to learn Shopify, tell us what you sell, who buys it, and the budget you are working with. We come back inside 48 hours with platform pick, timeline, and investment range. Reach out here.