I guess in theory, if i had an RTC and some one offered to trade it for a P.Bass then yes, i would most likely take the P.Bass, but if on the other hand i had a P.Bass and some one offered me an RTC as a trade, i would be like Hell No...
Especially since RTC over here aren't really worth much, and a P.Bass could fetch you a fair amount...
Oh and just for the record, neither fish are really my thing...