[CamperBob2]

with everything else equal arguing for the former is exclusionary.

Sure. But who argued for that? They merely pointed out that they considered this particular physics engine worth spending money on. The implication was that because money is typically limited for a college student, the software must really be worthwhile. The implication was not "LOL, you must be broke and can't afford good software."

[regularfry]

The implication j was responding to was "if you really cared, a mere few hundred dollars wouldn't matter because you'd be able to find the money." If you don't read that into the message chain, fine, but I do.