The scope : we have website where we need to fetch the supplier product data on to our side, through REST web services.
The products data includes, products description, SKU, weight, size, color, price (purchasing price) in euros, and price are actually according to the qty ordered. And the most important is the stock available (so API calls 3 times a day).
The site wont show the price until the registered user logs in, and the price displayed must be in local currency according to a coefficient rate. The user either keys in the qty and see the price or we display the bracket qty and the corresponding price ..
The rest of the joomla site, we will handle, so the scope is ONLY the integration of the API to the product catalog.