I strongly think that might be their Longreach endurance model. If so, they're over $1k new. If not that one, then perhaps the Kimberely (also an endurance model) that's around $700 new. They do both use the English girth system so you should be able to use pretty much any english girth. I don't think they're as heavily padded (flocked) as some of the other styles so you'll need to take that into consideration when you pick out a saddle pad to use with it. If it's structurally sound and fits the horse, it's a worthwhile purchase - perhaps offer her a little less on spec (I don't know how the big the market is for used Aussie saddles or how long she's had it for sale but the owner may be agreeable to your counteroffer). You'll have to post pictures of it in use if you decide to get it.