Toyota Repair: Labor Cost, engine seals, oil seals

Question
I recently replaced timing belt, water pump and 4 front engine seals for my 2001 Camery at the same time. The labor cost is $520 in total. Is it reasonable?

The reason I ask is that someone told me that there should not be too much additional labor charge to replacing water pump and seals while you are replacing timing belt. It turned out that the labor for timing belt is about $165 and the rest is $355, I was a little surprised by the addtional labor charge. It seems too much for me but i really have no clue about what a fair price is.

Thanks a lot for your help

Answer
Alot of repair shops advertise a low price to just replace the timing belt but the fact is that most cars will need additional parts like the water pump and the seals, of course you can decline any additional repairs and have them do just the timing belt but if after that the water pump leaks or the oil seals are leaking everything will have to be taken apart again, the price you paid seems within the normal cost for this repair.