I agree. You've got people in the fashion industry charging $500 for a t-shirt. If the market allows it, which it does, people will keep doing it. If it's worth $77 to you, which it seems to be for almost 800 people so far, then smash buy. If it's too much for you to swing, then make the adult decision to move on -- or sell off some items to help pay for it.
I will say though, if everyone starts charging $77 for their records, the market will buck back and it will correct itself. This rap market feels niche at this point and is slowly getting cornered, but the levee will bend before it breaks. And at this rate, it's going doooown baaaabyyyy *Robert Plant voice*