Its slowly being built up so its nothing really special right now, but we need people like u to add ur products and make it better.. I don't know a ton about it but I see people like @claudiaz promote it all the time, here is a link to one of her posts that can give u more info https://steemit.com/steemshop/@claudiaz/steemshop--buy--sell-quick--easy-right-here-on-steemit..
The only thing is that at @steemshop you have to offer the option to pay in steem 😉
Good luck, I hope to see ur products there one day soon!