#1
i got a schecter hellraiser but didnt get a coil split one and want BKPs in it anyway. is it cheap to get a tech to coil split normally?
#2
Assuming your pickups are 4-conductor, you can do it yourself for a $12 push/pull pot and a couple burned fingers with a soldering iron.
#3
Depends on yer tech. Some techs dont charge much extra apart from the obvious cost for the switch/push pull pot, some do.

As Roc8995 suggested you could do it yourself. =]