Can't make a range with one sale.

You need to apply overpay

Gonzilla is outdated -> mini needed.

B/O is 18 keys, the offer can't exceed the B/O

1 sale is alright when 3 conditions are met

And I won't call that a QS, but ignorance

Edit : and to complete NoFunLord's comment, your 1st guide is the correct one to use

Alright.

1. You do not make a range for a new unusual based on the range of the unusual it sold for.

2. DBD Gonzilla has a 1 year old price. You'll need a mini for it.

3. You usuallly need 2 sales to price a new unusual. Exceptions are in the guide below.

4. If it was sold in 2 hours without a bump, it's probably a quicksell.

I suggest you take a look at these guides to pricing unusuals:

http://forums.backpack.tf/index.php?/topic/6033-guide-for-unusual-price-suggestions/

http://backpack.tf/rules

http://backpack.tf/help/suggestions

Good luck!