Any vet not charge more than double TS's vaccine price?

Raleigh NC

Description

5 in 1's vaccines shots prepped at Tractor supply (which is not near my house) are about 8.95 each. Vets seem to have huge mark up and my maltese having a litter soon. Ideally I'd like the vet to do it.. Anyone know where they give good price ?? And would people prefer discount and do shot or bring to vet themselves?