i think that's pretty standard in the TV music industry.
on the bright side, the SOCAN royalties from this kind of stuff are fucking awesome, and more than make up for any low upfront compensation.
just a few minutes ago i found out how much my SOCAN check is going to be this quarter, and it's more than twice what i was originally paid for the music. since i'll be looking at four more of these checks this year, i'm pretty fucking happy. since it's already in reruns, i could be seeing money from this for years to come.
the moral of the story is, join SOCAN.
they are your friend.