Yep, I always thought medicine shouldn’t work muck differently from getting your car worked on.
You go in, pay the charge to get an estimate. Get what work done you want. Even call other shops to price same work if you’re not sure of the pricing.
I don’t think we’ll be able to pick up our own parts at wal mart anytime soon, but I’m always checking the shelves for prostates just in case.
I’d guess ‘off the shelve’ would be OK as long as it’s not made in China..........