Nobody can imagine the price some goes for.

Long time ago when EQ first came out, I know a max level cleric, full poh gear and epic 1.0 would sell for around 1000 - 1500 USD
Game money then was really expensive as well, but there are tonnes of buyers, and a few programmers hacking the game making illegal money.
Then there is also powerleveling service as well..

And that's 13 years ago now...