Jefe Bergenstein
Legend
Having a Belt of Healing is unbalanced compared with these prices. It's nice that your group likes using the Belt of Healing and that you don't think that it's overpowered...enjoy that addition to the game. However, I don't think that it quite balances the same way with comparable healing items in the DMG, which is my point, and has been for some time.
One might easily argue the converse... Its nice that your group likes using potions of cure serious wounds, and you dont think its underpowered.
The magic item guidelines in the DMG are estimates. I could easily argue that Gauntlets of Dexterity +4 (cost to create 8000) are broken because by the item pricing guidelines, gauntlets of continuous Cat's Grace (+4 Dex) cost 9000 gp. And what kind of chump makes bracers of armor +4 when they could make bracers of continuous mage armor for 1500? Slotless item of protection from evil for 4000?
Using the guidelines to prove the belt is broken in comparison to a potion of CSW seems odd given the items of unlimited cure light wounds and continuous vigor you can make...