To get inf gold all I did was use the dupe trick with the shared stash but its only really useful to get gold or to clone items for another toon becasue the game will detect dupe items and delete them all. Anyway, here are instructions on how I did it to get gold for those of you who are not aware
1 Put an item you want to dupe in the shared stash
2 press esc to open the menu and click new game
3 when at the char select screen alt+tab out of game to get to your desktop
4 make your way to the games install directory
5 open the Data folder and then the player_save folder (you should see saved files if you did it right)
6 copy the shared.box file into another location (I put it in another folder called backup but you can put it anywhere as long as its not in same folder as original)
7 load your game and remove that item from the stash
8 sell the item to blacksmith or witch for gold (you can sell to the other trader but he does not offer as much gold for them).
9 repeat steps 2-5 if needed
10 copy or move the backup you made earlier into the save folder and say yes when it asks to replace the original.
if done correctly you will have the item in the stash again and the gold you got from selling it should still be in your inventory allowing you to repeat to get tons of gold. I did this till I got a decent amount of gold and at that point I started duping gold to spend which was a bit tricky. Basically, you have to do what you did to dupe the item except you need to make sure to drop any duped gold before you dupe more (otherwise it gives a message when you load game saying it found dupes and it destroys all dupes and original copy). I used the gold dupe to gamble for rings/ammys at the trader (because they take 1 slot and often are high priced so duping/selling an inventory full of those gives tons of gold). If you accidentally forget to drop the gold and it detects duped items just start at step 2 again and import the backup (since it deleted the copy you had on character and the 1 in the stash you simply import the backup you had made of the stash to get it back in stash again).
EDIT/UPDATE: I just found a few saves someone shared on youtube with most (possibly all) the set items, allot of uniques, some high lvl toons with good gear, about 10 full stacks of gold, plus spells and other crap. Wish I had seen this earlier would have saved me time getting gold the other way and trying to gamble to get great gear lol. I will post links to where I found them below for those who are interested but you may want to make backups of your own save files before you use them (just click the button to watch the videos on youtube to see the download links for the files).