I own a couple of Topcons--A DM Super and an RE Super (marketed in US under Topcon Super D. The model you have, the RE2 is the model without interchangeable finder and has the Copal vertical traveling metal shutter. It's certainly a keeper. Lenses do come up on Ebay occasionally and prices go all over the place but should be under $100 for the more common lenses. Try Essex camera in NJ for the CLA. For the batteries, the Wein-Cell zinc-air battery are replacements for the PX13 and 625 used for these older cameras and these are available though Freestyle or BH Photo.