There's a forum called leatherworker.net where you can get alot of info from for all types of work. Being cheap is not the reason to do your own. It would cost you more in tools, supplies then to order from one of the site sponsors. The reason to do it is to gain enjoyment from an accomplishment and maybe learn a new skill.
Look at the forum and see what is involved and gather your info on prices and such, and enjoy your journey if you choose that route.