Hi,
I have used the Sandvik blanks, although now I have a number of BIAX blades I haven't touched them. If in the future I had a large roughing in job I would use them again to conserve the BIAX blades. Other than that they now only collect dust. Available from ebay and also greenwood tools:
**LINK**
Prices vary. NB be warned you need to grind a radius and rake on to the sandvik blanks. They are delivered square with 0° rake. Which will result in many scratches, much frustration and poor work. I've commented on that in other threads. BIAX blades are sometimes for sale on ebay.com.
If you want to browse an English language catalogue try here: **LINK**
If you want to know the price ask the dealer.
Steve