The BladeForums.com 2024 Traditional Knife is available! Price is $250 ea (shipped within CONUS).
Order here: https://www.bladeforums.com/help/2024-traditional/
I really really really really recommend reading the sticky at the top of the page. Really really really really really really really recommend it.
To repeat what's been said.
Most knife steel is under $20 for a good bit of it.
An anvil can be as simple as a 8 pound sledge in a 5 gallon bucket of concrete (I've seen some very good knives forged on these.)
Measurements on steel? well what size knife do you plan on forging?
RR spikes aren't much fun to forge if you don't have decent tongs.
If you want to learn to forge on the cheap look up "neo tribal bladesmiths" or "primal fires". Some of these guys use forges as simple as a hole in the ground with a pipe and blower attached.
Have I mentioned I really really really really really really really recommend reading the sticky at the top of the page and probably go back at least 20 pages on the forum.