User A: 500 scrap
User B: 10k gp (idk)
User A: puts in 500 scrap
User B: puts in 10k gp and presses 'ready'
User A: removes 499 scrap and presses 'ready'
Trade goes through with 1 scrap for 10k gp
(This is likely the case on all servers)
Server: Scourge