As I saw in road map Polkamarkets want to launch MVP soon to give users a taste of the core functionality of their product. Hope it will be launched soon to see it
Nowadays, it is better to see the MVP of the project before seriously investing on them.
Or better yet, look for actual working platform, as much as possible.
Because most projects are only good at the beginning of their development stage.
And will only abandon later on once they fetched money from naive buyers.
This industry that they are exploring is a good one. So let us see if they can indeed realized their platform as promised.