For the SP III, the best place I have found has been ebay, here; http://search.ebay.com/search/search.dl ... sicSearch= , but not always. I purchased one for $125 + $5 shipping. I have seen some sell for as little as $100, but you have to be patient and visit it often (daily). Every once in a while, something good pops up. Last week someone sold 3 of them for $130 each (buy it now type of sale). Other than that, you will be paying $150-$200 range.