I found an interrsting way to make lots of money in hellfire.
(easier and faster than the duplications mentioned already).
1st: You need at least 20,000 gold (maybe more, I always had at
least 70,000 when using this method).
2nd: Make sure every Inventory slot is full (if you put gold in the
slots, it must be 10,000 in each).
3rd: Drop 10,000 gold on the ground in a single pile.
4th: Put a potion or something (does not really matter) in the empty
slot.
5th: Drop 9,000 gold from one of the remaining slots (of 10,000
gold)
6th: Exit the Inventory.
7th: Pick up the 10,000 gold pile.
You should get the message about not being able to pick up anymore
and drop the 10,000 gold back on the ground. But if you check your
Inventory you should have the filled the 1,000 gold slot with 10,000
and still have the gold on the ground (a pile of 9,000 and a pile of
10,000)
Just keep doing this until you get board.. and you should have all
the gold you could ever want and none of it will be picked up as
duplicate items!! Have fun, and you no longer need to worry about
buying that item you always wanted.