I recently sold my 7.65 commercial Luger and I miss it, but I had to make room for a 1900AE [also 7.65]. The nice sharp edges on the sideplate are a plus, but the ground off stock lug is a big minus. To be honest, I would not pay more than $600 for any Luger with a ground off lug.
There is a guy on GB who welds new lugs on. John Sabato posted his ad/auction, it's an option for restoration.