I've just put 3 saddles on eBay and they are super cheap. Two I have listed at $10, both are totally structurally sound but both have also been knocked around a fair bit so they aren't pretty. The nice one is a leather jumping saddle which was one of only a few ever made, and I believe the only one in Australia. It's listed at far less than its value owing to my personal circumstances. Here is the link to one of them
http://www.ebay.com.au/itm/Status-dressage-saddle-/260932676881?pt=AU_Horse_Riding_Equipment&hash=item3cc0ccad11#ht_500wt_1202
If you click "view sellers other items" you will see more. I'm also listing stirrups, girths, helmets and boots in the next few days.
Enjoy!