Did you check out one of the shops who sell motorcycle gear?
I'm quite happy with my purchase for exactly 10000 Thb. It's not top end, but much better than running around with shorts and T-shirt.
Pants Yellow corn
Gloves Yellow corn
Shoes ZXE ??? I don''t know this brand, but they have exchangeable wear plates. I once lay down on a ice plate in China with new safety boots(20 KM/H), the leather was gone to the stole nose, so I'll not run on running shoes again.
Of course you have to live with that what they have (especially regarding sizes). I would have been more happy with other brands/products, but at least they could get me some gear for a more than reasonable price.