As a buyer, I would never hold a boardie (CGC or BO) that is trying to pick something up for me, at fault. That's straight up ridiculous! Wytches is the perfect example of something going haywire in popularity and being (near) impossible to get from the actual tables. If you pre-bought and it doesn't go your way, spend the refunded money on something else.
Ebay, on the other hand, is a different story. Neg those punks who weren't able to get them or cancelled then raised prices. That's shady as hell!