Marketpress Grid Theme Layout

Hi I see that this has been asked before and I did see that there is currently some development to better manage the Marketpress theme.

I would like to do a Grid layout for my products. I've seen some themes around that have this available. Are Marketpress products simply posts? If all I had were products only and no other posts, can I use any grid layout theme to pull all posts so that my products shows up in a grid format?

..hopefully this makes sense....