I do not want to discourage you, because it is an amazing feeling to fashion a rifle!
But, Without the tools, I believe it will cost you the same as a custom rifle.
Barrel - $200+
Stock -$100+ or Precarved stock - $250+
lock - $170+
trigger - $10-$60 single or set
Butt Plate -$20-$40
trigger guard - $15-$40
thimbles - $20
Rammer - $5
Various bolts pins and screws - $20
Vice $50
Chisels $100
files $75
stain $20
finish $10
Various taps and Drill bits $60
Plus 200+ hrs to complete
If you go cheap on any of these items it will show!
Rifle builders do not do it to become rich!
The kits by Kibler, from what I have seen and read are the best out there All others are not kits but parts sets which require a lot more work. If I were just starting this crazy ride, I would go with a Kibler.
Other builders chime in and correct me if I am wrong.