If you live in Sydney go to Brighton Saddlery. They are closing their shop and going online so they are constantly having different sales. One time I got a Polo shirt for $2 it was sooo good. Obviously it wasn’t the best of the best, but it was still comfortable to ride in. Search around and see what you can find 🙂
If you look hard enough you could find some nice polos at second hand stores or tack stores that have a consignment section. Obviously I wash it before I wear it but Ice found some really nice Ariay polos at my local tack shop that we’re into eh consignment section.