I remember I wanted to reforge my bat scepter once and it took me 40+ plat for godly. Then it took me 27 platinum for a good Snowball Launcher Explosives Rocket Ammo thing. Then 12 plat for good wings then like 10 gold for a workshop and 5 for rocket boots. I mean this guy. but I havent had any problems with reforges in the past 8 playthroughs ive had, maybe it's because i made his floor retractable and made a giant lava pit below.