I just had a couple of females release a bunch of young CRS and CBS. The parents are S+/SS stock from SS/SSS stock. If you are interested in getting some CRS/CBS from me let me know. I'm not sure I have 25 CRS but I do have CBS as well and they are high grades.
As far as prices go, this is generally how much they cost for say 10 shrimp at the respective grades from what I've seen (not including shipping):
C Grade $30
B Grade $40
A Grade $50
S Grade $75
S+ Grade $ 100
SS Grade $ 140 (Double Hinos are generally $20 each instead of $14 each)
Remember, getting the higher grades means that a higher percentage of the offspring will be higher grades, meaning that you will be able to sell them for more so it does pay to start with better stock. Send me a PM if you are interested and I can get you photos of the acutal shrimp you will receive along with prices, etc.