This would be an innersphere auction house. With salvage we collect from battle we can put up to auction. To purchase these items you would need commerce credits which we buy with real money but the kicker is we can turn in the credits for money as well. the devs essentially get a 10% cut on what we are trading between each other.
For example I (party a) acquire a shadow cat from a recent clan incursion. I repair it and put on for sale for 50,000 CC
someone (party

Party b had to pay $5.50 to get the 50,000 CC devs make 50 cents on the transaction.
hmm odd emoticon meant to be party b