Speaking for myself only, I think I've got a good $2k put into my "Hero" Indy. And for the most part I am VERY happy with what I've built.
Current Build:
Sculpt: Inigo Gil V2 and V3 (keep going back and forth on which I prefer the most)
Painted by: Silent Surfer [both]
Real Leather "Screen Accurate" Jacket: Hye Hwa/Jagzz
Shirt/Pants/Web Belt: Yunsil
Leather Whip: Joe Strain
Satchel strap/Holster/Leather Belt: MFisher
Body: HT ANH Han Solo with Blitzway Zorro Chest
Satchel: DID
Gloves: DID Hell on Wheels Fury
Aldens: HT DX05
I have three items I have plans to upgrade. Real leather aldens. Diecast/wood Revolver. And a sculpt I'm waiting to be offered. Then I will be hanging Dr. Jones up on the shelf for good. Moving onto other characters.
I know there is another Indy run going right now that's sold out but was running $3K.
So yeah, building the "Pefect Indy" is a journey. And can cost quite a bit when all said and done.