I just did a search for PHL-LAX, depart Thurs Sep 14, return Mon Sept 18. Selected max values (3+ connections, prop), came back with fare of $215. Best I'm finding anywhere else is $298 on TWA (from cheaptickets.com). It says that price includes all taxes and fees (which means it's equivelent to a $175-$180 bid on Priceline).
I'd say it's pretty good.

Jeff