$10 for BOTH at a local pawn shop, $25 in adapter rings. These are the old aux lenses for the Olympus IS series bridge cameras (among others). The Oly B300 now fits my 40-150R and the B28 fits both the 17mm and 14-42R! I love it when these things have "normal" non-proprietary threads. Kinda rainy here right now, so pics over the weekend.