I don't think that's expensive at all! The likelihood of even 1 more of those hitting ebay in the near future is pretty slim. With lower end players, people don't think that the limited parallels will sell very well so they never end up listing them.
I collect another lower end player... Chuck Kobasew, and his High Gloss from 03/04 UD Series 2 /25 took me MONTHS to find on ebay. You should be so lucky to grab one /5 of your player. 
Congratulations on the sweet pickup!
