Tesla Coil Conquistador

Counter. Other suggester wasn't willing to resuggest.

New price: 30-36 keys

[proof below]

SALE #1 = 30 keys

https://backpack.tf/profiles/76561198290658705#!/compare/1485129600/1485302400

Sold for a Prof KS Sniper (7) + Vivid Plasma Fruit Shooter (23) = 30 keys.

SALE #2 = 35 keys

https://backpack.tf/profiles/76561198290658705#!/compare/1485302400/1485388800

Sold with 1 key for a Smoking Executioner (36) = 35 keys

SALE #3 = 36 keys

https://backpack.tf/profiles/76561198170124494#!/compare/1485388800/1485648000

http://www.tf2outpost.com/user/76561198170124494 - Unknown B/O

Sold for a Mega Strike Taunt: Most Wanted (30) + 6 keys = 36 keys

SALE #4 = invalid

https://backpack.tf/profiles/76561198259205715#!/compare/1484956800/1485043200

Sold for a Disco Beat Down Conquistador (20) = outlier

SUMMARY

Sales: 30 / 35 / 36

Sellers: 35 / 50

Countering because the other suggester wasn't willing to do so. Going with a 30-36 key range. Credits to Yang Yang for Sale 1 + 2. Not capping yet because the seller at 35 is not even a week old yet.