Are you aware of the project OpenBazzar, it seems you are doing the same thing.
Actually I had been following this project from the very beginning, but you guys disappeared last year without any update in the previous thread, it let me down very much, if you hope us invest in your project again, please reveal more information of your team.
1. In order to be able to sell on OpenBazaar, you will have to download a program and KEEP IT RUNNING. If the program is shot down, your store will go down also. In MaskNetwork you post an offer, the message traverse the network and once included in a block will be available 24 / 7 even if you die in a car crash. No server, no central point of failure. Set and forget. You will be notified on new orders.
2. Point 1 would not be such an issue for some sellers but the design says that the end user will also have to download a program to browse the market. And that is a real drawback. They will do it only if they can buy something that can't be bought over eBay or web. In MaskNetwork, the end user will only have to choose a web node, open an account and start browsing the market.
Point 2 is the reason we have redesign everything back in 2014. We did not "disappeared". We have started a new long working session...

OpenBazaar will work only if you can buy drugs or other illegal stuff using it. Otherwise, the chicken and egg effect will kick in. No buyers, no sellers willing to keep a program running 24 / 7. No illegal stuff, no buyers willing to download the client just to browse a market for things they can buy over eBay in 2-3 clicks.
I will not mention other MaskNetwork features like built in escrow system, multisigs and many other tools for merchants. And anyway, what you see online right now is the "foundation", the basic stuff. We have build the real cool stuff over this layer.
So, stay tuned...