Cheap period panties

This isn't exactly related to cups but I know most of the ladies on here like reausables so I figured I'd put this here.

I really like the idea if thinx...but they are so darn expensive! I have seen a couple other brands for a bit less but still quite expensive. I have even tried 2 "China cheepie" pairs that felt good but just aren't right for my curvy American body. I'd really like a few pairs for backup with my cup and for days when im just spotting. I'd like to not spend much more than $10 a pair.