I've done it with one dog and one cat, both were under $100 but that's the nice thing about cost of living here. I've found most things cost 2-4 times as much in other parts of the country. I believe it is costly because the dog is actually anasthetized and some places will also do bloodwork that relates to the procedure. The ones my vets do also include minor extractions (so you don't pay extra to have a bad tooth removed if it's a simple extraction).
Liesje & the K9s
Nikon (GSD) U-CH SG SchH1 KKL T1 FO PA TFE-I FDCh-S CL1-R UJJ U-CA HIT TT CGC, free reign semi-retiree
Coke (All-American), couch warmer extraordinaire
Indy (All-American), flyball star in training
Rainbow Bridge Kenya (GSD) U-CH FO OB1 CL1-R CL1-F RA HIT TDI TT CGC