I have been looking for a saddle with a low budget just like you. In my experience and searching I've found that there are some really good used saddle deals for around 800-900, you can get a really nice used stubben, bates, pessoa etc. Id try some consignment shops, such as pelham saddlery. I have just been google-ing consignment saddles and a lot of hits come up! It's good to buy from a consignment shop because they will usually let you have a trial period with the saddle to test it out, if you buy it through ebay
you get what you get. I was surprised what you can find with a low budget, and my budget was a little bit lower. Good luck!