For the 50 and 35, you can go to eBay and do a search on what these lenses have been selling for. Prices have been going up.
Joe
In the U.S. and Australia you would do well with all of them, although
it sounds like their condition is not the best. The 50 and 35 are
particularly in demand right now, and hard to get in the two countries
mentioned. I'm not sure how available they are in Europe.
