Just saw this today, sale ends in 16 hours.
NITTO RB 021 size 42cm only from an ebay seller with 99.9% feedback, in the USA with free shipping for $24.75. 8 sold and the seller has more than 10 in stock:
http://cgi.ebay.com/NEW-NITTO-RB-021...item2eaf4a3fe4