Jiggymouse: You didn't just buy 1 sword, looking at your history you bought 3 swords and paid the correct price for them. Obviously there was some kinda bug (the code for the new site was buggier a few days ago when it happened than it is now) where it submitted your transaction 3 times instead of once. I see that you sold the swords back for a loss of 13,500. Since it's obvious you didn't intend to do this transaction, I am sending you 13500g to make you whole.
Peterre: the price of Ring of Smoke is 15000. It has always been 15000. If you examine a ring of smoke in someone else's inventory (or your own) it says the VALUE is 7500. Because that's how much you can sell it for. But if you look at the ring of smoke in the gold shop, which is what you have to click on to buy it, it clearly says Price: 15000 (and thats how much it cost in the old system also). So what you paid is correct.
* Other things fixed while investigating these matters: * - fixed bug where 10% discount if you have Zu rune unlocked was not being applied properly * - made it so that equippable items don't stack the way that lottery tickets, potions and runes do * - fixed a bug in how the gold ledger was displaying amounts