In the early to mid 2000s I would believe this. But for a major e-commerce provider in 2012? That seems vanishing improbable.
PCI DSS is the data security standard required by credit card processors for you to be able to accept credit card payments online. Since version 1.0 came out in 2004, Requirement 4.1 has been there, requiring encrypted connections when transmitting card holder information.
There’s certainly was a time when you had two parts of a commerce website: one site all of the product stuff and catalogs and categories and descriptions which are all served over HTTP (www.shop.com) and then usually an entirely separate domain (secure.shop.com) where are the actual checkout process started that used SSL/TLS. This was due to the overhead of SSL in the early 2000s and the cost of certificates. This largely went away once Intel processors got hardware accelerated instructions for things like AES, certificates became more cost-effective, and then let’s encrypt made it simple.
Occasionally during the 2000s and 2010s you might see HTML form that were served over HTTP and the target was an HTTPS URL but even that was rare simply because it was a lot of work to make it that complex instead of having the checkout button just take you to an entirely different site