At the shop I work for the cottons start at $5m and go up to $16m. We always have a nice selection for $5, plus there is always a sale or coupon to bring the others down in price. FQs start at 1.50 up to $4.
I will pay just about anything for the right piece if
1 - I'm using it right away.... not a stash builder
2 - Must get some sort of discount.
3 - There is nothing even close for cheaper