# Retail and E-commerce: Selling Online and In Store

> Online store for retailers and brands: catalogue, payments, stock synced with the till, click & collect. Shopify, WooCommerce or custom build. Quote in 12 hours.

Page: https://eldev.fr/en/sectors/retail-ecommerce/ · Version française: https://eldev.fr/secteurs/commerce-ecommerce/index.md · [Home](https://eldev.fr/en/index.md)

Whether you run a physical shop that wants to sell online or a brand that already sells and wants to convert better, the subject is the same: an accurate catalogue, a frictionless checkout, stock consistent between the web and the shop, and logistics that keep up. We build these stores on Shopify, WooCommerce or custom, according to your volume and constraints.

## What we do

### Online store

Catalogue with variants, search, filters, product pages that sell, Stripe or PayPal payment, delivery and pickup: a complete store, fast on mobile.

### Stock and till in sync

Connection to your point-of-sale software or ERP (Odoo, Hiboutik, Shopify POS): one stock, consistent prices, no double entry.

### Click & collect and delivery

In-store pickup, local delivery, national carriers, pickup points: the delivery options that match your customers and geography.

### Conversion and retention

Abandoned carts, customer reviews, automated emails (Klaviyo, Brevo), loyalty programmes: what brings customers back.

## From the shop to the web without spreading thin

The classic trap for a retailer opening an online store: two stocks, two catalogues, two tills. We start from your existing tool (till or ERP) as the single source and connect the store to it. Web orders appear in your system, stock decreases everywhere, the customer can collect in store.

## Converting on mobile

More than two thirds of visits to an online store happen on a phone. Readable product pages, fast photos, one-screen payment (Apple Pay, Google Pay), delivery costs announced early: we optimise the mobile journey first and measure the conversion rate before and after every change.

## Industry constraints

- French consumer law: pre-contractual information, 14-day withdrawal right, terms of sale, mediator, prices including tax and delivery costs displayed.
- Payment: PCI-DSS delegated to Stripe or PayPal, 3-D Secure, refund handling.
- GDPR: customer accounts, newsletter with consent, analytics and advertising cookies subject to consent.
- Stock: a single source of truth (till, ERP or store) and reliable synchronisation, otherwise stock-outs and cancellations multiply.

## Why ELDEV

We choose the platform based on you, not on our habits: Shopify to launch fast, WooCommerce to keep control, custom when your business demands it. We know how to connect the store to your till and logistics, and we measure what matters: conversion rate, average basket, click & collect share. You keep a single partner who understands retail as well as code.

## Frequently asked questions

### Shopify, WooCommerce or custom?

[Shopify](https://eldev.fr/en/technologies/shopify/index.md) to launch fast with no hosting to manage; [WooCommerce](https://eldev.fr/en/technologies/woocommerce/index.md) for full ownership and integration with a WordPress site; custom for an atypical catalogue or logistics. We advise you at scoping, with no bias.

### Can the store sync with my till?

Yes, with most point-of-sale systems and ERPs such as [Odoo](https://eldev.fr/en/technologies/odoo/index.md), through their API or an export: sales, stock and products stay consistent between the shop and the site. We set up the sync with logging and alerts.

### How much does an online store cost?

It depends on the platform, the number of products, the integrations (till, logistics, marketing) and the design. Quote after a free scoping call: [get in touch](https://eldev.fr/en/contact/index.md), reply within 12 hours.

### Do you support the store after launch?

Yes: maintenance, updates, monitoring, continuous conversion optimisation. See our [e-commerce](https://eldev.fr/en/services/e-commerce/index.md) and [maintenance](https://eldev.fr/en/services/maintenance/index.md) services.

## Related pages

- [Websites for Restaurants](https://eldev.fr/en/sectors/restaurants/index.md)
- [Websites for Hotels and Tourist Accommodation](https://eldev.fr/en/sectors/hotels/index.md)
- [Development for Startups and SaaS](https://eldev.fr/en/sectors/startups-saas/index.md)
- Related service : [E-commerce](https://eldev.fr/en/services/e-commerce/index.md)

## Contact

[Contact form](https://eldev.fr/en/contact/index.md) (HTML page: https://eldev.fr/en/contact/) · Email: contact@eldev.fr · First chat is free. Response within 12 hours on business days.