Not great finds as such but I am amazes by all the stuff available on vinyl ,although its undoubtbly hit or miss in terms of availabity.
Since recently buying my nice Rega turntable I have discovered loads of shops selling decent second hand vinyl a cheap prices.
Typical example was yesterday getting "Lee Konitz Nonet" on Pye and Gerald Wilson Discovery Lps for just £4, both unplayed.