Play-money and real-money markets side by side, priced by an LS-LMSR market maker.
Per-trade feeFree tier
Futuur
2 products in the catalogue, each on its own card. One vendor, several products, because a merged card could not be compared or priced: the halves have different buyers and different competitors.
One question, two order books — play money and real money, selected per request.
Per-trade feeFree tier