"You need more money for repairs" How much?

[houselyrander]

My weapon is getting beat up so I'm trying to repair it, but I'm just getting told I'm too broke. Since selling stuff seems to be the only source of cash and I don't wanna sell everything just to be told I'm STILL too broke, I wanna check the repair cost. How do I do that?

 

EDIT: Apparently it says so in a tooltip that doesn't always show up.

[Richtofen]

@houselyrander

You're supposed to use the golden hammers next to campfires or the red portable hammers to repair your weapon. Don't repair your weapon on npc's..

[Tsaozin]

If you do have repair kits, use those. Repairing at the NPC vendor is a last resort, but I'm glad it's an option!
I believe hammers are random drops, craftable(?) and can be purchased from NPC Weapon vendors.