Sales, not sellers. This won't fly until those sellers actually sell at that price.

Sales -

http://backpack.tf/profiles/76561197978210095#!/compare/1471305600/1471392000 10

http://backpack.tf/profiles/76561197978210095#!/compare/1471132800/1471219200 (1 key for 2 = ~9.8)

9.66 classy seller sold - https://backpack.tf/item/5047023006

Sellers at 9 + 9.33 ref both have no stock

http://backpack.tf/id/freez1e

http://backpack.tf/id/yuutt66

But yutt had some a week ago when he made it, so presumably sold at 9.33

Buyer bought some at 9 - http://backpack.tf/profiles/76561198108384535#!/compare/1471219200/1471305600

Guess conservative raise is fine.

the sellers at 10 ref i'm guessing however selling=/=sold and shouldn't be used to set a high-end