I see that you currently have a "filters" interface, I would love to see that expand a bit. I thought it was a bit funny that aside from price, the only option for filtering is shops. I've been wanting a website like this, largely because I don't really care what shop I buy the thing from. I get that this may be the only data you have readily available to filter on, and that it may be useful for others... just not so much for me.
We built this precisely because we believed users didn't care much about which shop the item came from. We see the context of viewing items through the stores as a marketing tool that leverages established brands. We hope that being able to see much of an entire store's inventories for lesser prices feels like a superpower.