1.13 Known Issues 10/30/2019 *Updated!*

[Bankswórth-bonechewer]

I believe hes refering to this.

100g for last bank slot

It was never that much it was always 25g for the last 4 even the wiki has this info. The cost of the bag slots increases with each extra slot purchased starting at 10[Silver], (then increasing to 1[Gold], 10[Gold], 25[Gold], 25[Gold], 25[Gold], 25[Gold], for a total of 111[Gold] 10[Silver] for all slots (not including the bags that go into them).

However thats saying 7 slots and in classic there is only 6. Info for its hard to find.