D2 trivia generation for "quiz"

[Crystalion]

Trivia Question: you buy a couple items from a shop, mess with them a little, and then sell it back to the shop at a profit! What did you do?

Warning: this is answer/discussion of the trivia ...

While you can occasionally gamble an item and sell it back for more than you paid for it this question is about buying/messing/selling back: you transformed the goods bought in the Horadric Cube.

Note that I need to reword the question to avoid the case where someone has sold gems to the shop and I use them to socket something and make a profit! (Or perhaps this should be one of the trivia answers, since it is an interesting case).

An example of a Horadric Cube transform that makes a profit (no Edge bow or Gheed's charm needed): buy a cheap simple spear from Charsi and some arrows then combine to Javelins in your cube and sell back.