In Austin, TX it's $11 for a round of trap or skeet for non members and $7 for members. $6.30 a round if you buy a preloaded key. They give you 27 birds for trap and 26 for skeet, in case of no-birds or noise activated pulls in trap.
Five stand and sporting clays is by the bird. $.50/target non member and $.40/target for members. I usually just shoot trap and skeet so I don't know if the sporting clays course has a preloaded key deal.
They sell ammo, but I always shoot reloads so I don't know the price.
They don't rent shotguns.