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I use Nikon SMZ65. One can buy it (or same) on US secondhand market (almost new) with total price about $1500 including postage and taxes. No reason to pay x3-4 times for unused.
As a light source I use just usual lamp (any shop) but with new type of light element 20kVt (= 100kVt of old type) and light temp 6400K. Photo adaptor may by constracted in home with proper tube - $ 00.