Does this seem too cheap for a stone this size? This guy has a lot of listings, has anyone bought from him before?

http://cgi.ebay.com/Belgian-Coticule-Sharpening-Stone-Extra-Fine-4-x15-8_W0QQitemZ310027727231QQihZ021QQcategoryZ66826QQt cZphotoQQcmdZViewItemQQ_trksidZp1742.m153.l1262

Any opinions would be appreciated.

Neil