CampBX is at $110.50 and MtGox is at 122.00. Either your math is terrible or you are getting bad information on the exchange rates.
CampBX's volume is so pathetic they aren't even relevant.
http://trading.i286.org/
It's cool that you've been here so long that your activity travels evenly with your post count. lol
Yeah, that site hasn't updated BX for ages! I don't know why.
Probably like you said because they are irrelevant. I'd still like to know how you are supposed to arbitrage between Gox and anywhere considering you can't get fiat into or out of Gox.