The Traveller’s Oracle; Or, Maxims for Locomotion: Horse and carriage keeper’s oracle ; Rules for purchasing and keeping or jobbing horses and carriages ; Estimates of expenses occasioned thereby ; An easy plan for ascertaining every hackney-coach fare (1827)
This fount of information about various aspects of the care, purchase, and maintenance of a horse and vehicle provided the above estimates for maintaining a vehicle. I have seen some similar estimates, many based on London, so the prices would vary if purchases were made elsewhere, though there would be a significant lack of options.
We have a post that explains the major type of Regency era conveyances here, and if you search the Regency Travel category, we also have some additional vehicles:
Regency Fashion: Carriages, Coaches and the Barouche
Regency Travel: Double Body Coach
Regency Travel: The Town Chariot
Regency Travel: The Tilbury Firm
We also have posts about travelling, Coachmen, and various other tidbits.