I thought we established that the volus ship yard vendor realized that it was a clerical error and the normal turian frigate that was being decommissioned was in fact a stealth prototype, which was illegal for civilian purchase and ownership, so before any inspectors grew any the wiser, he super discounted the Tyrus just to get it the hell out of his ship yard. Given how little Nova gives a crap about following the law to the letter, this was the bargain of the century.

And totally! I can certainly help with potential missions, and I do like what Mosis suggested about the new guys kind of having their own little story arc before running into the team. It'll give them time to bond and join in a bit more organically when the game comes their way.