I suggest a new status for bazaar slots in addition to Selling, Seeking, and Seeking Repairs - "Reserved". A "Reserved" item could not be purchased or repaired, but simply viewed by others until the owner removes it. This would allow two improvements:

1. Players would be able to quickly throw something into their Bazaar to free up space in their main inventory, without having to go through the steps of selecting all of a stackable item, or putting in "999,999,999" for a price to make sure it doesn't get snatched by someone. There would just be a "Reserve" option on the menu when selecting an item in inventory.

2. Crafting classes could have a guarantee that when they repair an item, they would not see "Unable to complete transaction" because the other player's inventory is at 100/100 and can not hold the item to be repaired. Instead, if a repaired item can not be returned to inventory, it would just go into "Reserved" status for the owner to remove later.

Seems to me like it'd have pretty good benefits for the dev work involved.