Those who had previously participated in the bidding were all students of Shrek Academy, and they all needed a soul storage device. In the entire Outer Court, owning a soul storage device with a capacity of over five cubic meters was absolutely rare as phoenix feathers and unicorn horns.
And the students of the Outer Court were not that wealthy, for even the most frugal could spend at least the resources of a purple rank badge on the production of a One-Word Battle Armor. Earning a purple rank badge was no easy feat. Therefore, many students, if their families were affluent, would use some of their family's money to buy materials from outside to save as much time as possible. Fewer students relied solely on earning badges.