Couple Quick Questions, Possibly some dumb ones.

[Glasseye]

In answer to your questions.
1) Going rate ? You already state a price range in your area. You need to research and assess this against each individual prospective customer. i.e. do they already use a repairer and are you as good(or better) than them?, what repair volume you might expect?, are they good payers?,what added value you can give to your customer?(exceed their expectations),are they pro repair? if not why not?,. These are some of the questions which will influence your price offer/package.My advice would be to do an arranged meet with them to discuss their needs in a help/help way, leaving price negotiation till the end.
2) Visit frequency - again this needs to be tailored to meet the customers need but always leave them feeling your giving them a special service, I suggest a regular visit schedule would work better for you and help to reinforce customer loyalty.
3) UV protection - if the equipment you use allows direct, uncontrolled UV exposure, always cover it until you are ready for curing.