Agreed. The prices I've seen for 1 ounce of raw Angora fiber (i.e., not dehaired or anything) are from $4 to $9, shipping added on top of the ounce price. I've seen these prices on Etsy plus individual blog sites. Websites are erratic as to whether they use the word "prime" or not. I've noticed no relationship between the use of the word "prime" and the price quoted.
I purchased 1 ounce pure white Angora roving at a yarn shop in the S.F. Bay Area on Monday, August 12, for $19.00. It turned out to be even better: it was combed top! And this was a retail price! My guess is that the Angora-owning person sold the combed top to the shop owner for approx. $12/ounce.
Since I have no rabbit(s) yet, I felt I got a steal, even at $19.00. Roving alone at $19 would've been nice, but combed top! at $19!!! Wow.
HTH.