That seems to be a fair rice based upon current market condition. Anywhere between 43 and 57 cents per lb looks like going market price. Please keep in mind prices do fluctuate on a daily basis and the more material you have you should be able to negotiate a better price.
Source: http://scrapmetalpricesandauctions.com/exotic-stainless-alloys/
Source: http://scrapmetalpricesandauctions.com/exotic-stainless-alloys/