Looking for a simple e-commerce plugin [closed]

You may want to consider Cart66. I bought a single site license a few weeks back as I was looking for something along a similar line to you. It doesn’t force a bunch of bespoke templates on you, instead, you have to create each product through a custom post (which is what you are doing anyway). However the big benefit of this is that you have near total control over how your product pages look.

Cart66 comes in two flavours – free (Cart66 Lite) or if you want more features and support you can try one of the site license options.

So far I’ve found it to be very straightforward and more flexible than a lot of the competition. Hope this helps