Price check on Sword Mods

15^50
20/20
+30HP

I checked the Weapon Mod price guide, but it seems a little outdated.

2k for 15^50
5k for 20/20
5k for +30hp

agree on the 20/20 and +30
15^50 is 1k max. I can barely sell them for that much, and I've seen people selling for 500g.