Price has nothing to do with the amount of hook. The Dyno-thane Soaker coverstock is one of the most durable on the market. It will last longer than most others and as such is worth more.
If you want to compare prices, I'll take the Dyno-thane Vendetta Black over the V2 Clean, any day. These newer generation V2's are hardly what created the V2 craze in the first place. Their cores look nothing like the original V2, which was nothing more than the Nitro R/2 re-introduced (which was a great ball too).
Tony