effect

What would be the unusual effects considered "high tier" that would also be as cheap as possible... I mean, for an unusual item.

Buying 30% off unusual quicksells, with 10+ keys pure! (No taunts or weapons) Price List (Backpack.tf unusual price on the left, price I'll pay on the right): Prices are firm. 7 ---> 4.9 8 ---> 5.6 9 ---> 6.3 10 ---> 7 11 ---> 7.7 12 ---> 8.4 13 ---> 9.1 14 ---> 9.8 15 ---> 10.5 16 ---> 11.2 17...