Have you been following Crystalballl's threads on her bunny? The blood work for her bun showed a possible kidney problem, although since a urinalysis was normal she's okay to go ahead for surgery.
I'm surprised it's $60, that's a lot more than I expected. Is that a full blood panel? For a pre-surgery check, my vet only does liver and kidney tests instead of the full panel of tests. It might be worth asking about that, since there's no real need to do the rest of the tests unless the vet suspects she has a health problem. Can your vet not do it on the same day as the surgery? Or does he have to send the sample elsewhere for testing?
Blood tests are my preference, although lots and lots of 3 year old and older rabbits have been spayed without blood tests and turned out fine. If you're feeling that the extra trip and money might cause a difficulty for you, pm Rabbit Hutch for advice. I know she said she's spayed lots of girls without blood work and with no problems.