Rabbit's Foot; I think it should stay at 50k. It's not the best item, so I think it should roughly stay at 50k
Ring Of Wealth; 40k is a bit low for an item that gives you like 10x the cash, so maybe about 55-60k?
Blood Money; For a chance of getting another !cash, and even another !cash right after, I'd say about 50k
Treasure spade; It's an alright price as it is imo, but maybe raise to 55k-60k, only if you can increase the chance of clues.
Coin Of Generosity, it's fine the way it is.
Rush Time; I don't think 100k is a decent price, I woudla only put it at like 70k-85k :o
Gloves of silence; I'd say put that to 100k or so, as you can get a shitload more with it, so 100k would be worth it imo
Diamond ring I think's safe at 1mil