A pretty simple suggestion. In prison, there is no shop sign for selling 1 stack (64) of cacti and we have to sell them 1 by 1, which takes a very long time to do. Some people (Including me) may own a cactus farm and this addition would really help.
Well if someone only has 7 cactus then if the shop buys it in sets of 64 they will be unable to sell it, it excludes people with lower quantities from selling
But we already have a sign for selling 1 cactus per. My suggestion was just to add a 64 one. Please read before posting.