SZD 45 Ogar. Hell of a lot cheaper than a Grob or a Dimona.
See further the article
"An Ogar Story: from not quite an ugly duckling to not quite a swan", in the 01/05 issue of
Free Flight, page 14.
Helluvalot cheaper but a really nasty thing to fly. I did a lot of instructing in one 15ish years ago and was glad to see the back of it!
I have never flown an Ogar, but personally I would not be interested in an aircraft with a reported best L/D of 15:1.