From Dark and Darker Wiki
Is this good? Eh, probably not. Mathmatically speaking, a full 500 luck kit, using Bard Treasure perk AND max rolled luck pot, will net you around 600-1500 gold cost, depending on the time of wipe, and when you consider the fact that the key is going for around 1200-7800g (average 5400 right now) it ends up being a very risky and not worthwhile investment.