Check out Springfield Leather (
www.springfieldleather.com) for pricing. Good prices, good tools, etc. They also carry Tandy's line, so its more of a one stop shop if you go through them.
All you need to get started is:
Good leather, an awl, harness needles, waxed linen or nylon thread, a sharp knife (or several), a place to work, and an imagination.
I have yet to use a sewing machine on my goods, although it is on my want list to save time.
The rest of the stuff, you are better off buying as you need it, rather than stocking up a whole tool box of stuff you never use.
I buy a side of leather from Wicket and Craig for 130 dollars or so. This is basically half a cow, so its a lot of leather.
The other stuff I got from Springfield Leather or Tandy over the years. Ebay has a lot of older tools too, but prices vary.
DM
Edit... Tom got a lot of what I missed too. The overstitch wheel is important to help get even spacing of your stitches, as well as a stitch groover, to lay out a groove for your stitch to lay in.
And the burnisher, which can be a piece of smooth antler or wood, or plastic, or...... Lots of choices there.
DM