How the marketplace will work, it will be a thing like SOMA where you get rewards with tokens to push your friends' goods?
I don't think you need to push something here. It will probably be a classic marketplace where you can just buy and sell stuff, within one social network, so you don't need to waste time on registering and selling it somewhere else. You'll be able to pay for it with Sphere token, I'm not sure however if you'll get any additional rewards on marketplace.
Better because one of my concern with SOMA was that you can just go an pay a huge group to push your products which is unfair to other sellers
My concern is more regarding the audience you can reach when you sell your products. According to the whitepaper "the marketplace will allow users to create products which followers and friends can see and purchase using their SAT". If only friends and followers can see and buy your product, I am not sure if it will be enough.
That's true. Hopefully they will do something regarding this, as in the most cases not friends but people you don't know buy stuff from this kind of marketplaces.
Maybe something like selling groups or a complete integrated marketplace like "ebay" or stuff, where you can search, maybe also search for stuff in your area etc.
