i already have acheived this with the personal shop, i put an item in, froze it so i could drop the item, dropped the item, my other char picks it up, items still in shop but then it does let you buy it from them

i know what you are on about and thats just scamming, not making money, it WILL work though, unless it checks wether you have the item or not. Something else to look into is: press E click make stall, search for 1, make a stall, search for 2, close the shop and search for 0, keep going until you get minumal results, if you make a stall then set that variable to 0, then enable speed hack, you can actally run around the land scape really fast and you wont lag back. You can also speak to NPCs then walk off while talking although once you move you cant use that NPC (if you go to teleport one then walk away, a blank map will apear)
0 - off
1 - making stall
2 - made stall
sorry for off topic but he bring up trades