Hi Dave
One of these has just came up for sale in the Telescope & Mounts section. However, you could also consider the 127mm triplet refractor from Astronomy & Telescopes in SA for $1850 - $2050. The person selling the 2nd hand one indicates that he bought his 2 years ago and I don't think he has realised that the prices of these refractors have come down. Finally, I have no connection with A&T in SA.
http://www.telescopes-astronomy.com....-refractor.htm