The prairie bomb is around 10 each around here. I usually trade 2-3 for limited wide distribution beer (sucuba) and both parties are happy
Bomb is singles (aside from Arkansas where they have to sell in 4-packs due to the laws there). Fred's Blend was singles and OK only. This thread should give you an idea of how limited Fred's was, but I can't really speak to what a fair trade would be.
That was a GABF thing rather than "actual" distro (as noted in the thread I linked), but you're correct.
We get so much crazy stuff I can't even keep track of what is normal distro, special occasion, someone's cousin dropped some off...it's too much