First suggestion, and it wasn't easy for me (Total newbie alert!). Tell me if I did anything or everything wrong. Constructive Criticism is very much appreciated since like I said this is not only my first unusual suggestion, but my first suggestion on bp.tf in general.

Sale #1: http://backpack.tf/profiles/76561198112459792#!/compare/1473033600/1473552000 (1:1 for a clean Electric Hat Protector Phononaut)= 35 keys

(No pure B/O could be found.) So 35 keys= first sale approximate value.

Sale #2: (This sale makes absolutely no sense considering seller only got 1.5-2 keys items in their bp but their pure B/O was 50 keys (Paypal, Steam Market?) Link: http://backpack.tf/profiles/76561198198597174#!/compare/1471737600/1473552000 (Going to not count this sale cause it makes no sense)

Only one version of this hat that has been sold that I could find. (Another version out there but it was unboxed and being sold by the same person.)

IF I can find more evidence and sales, I will make a new suggestion with them in.

Conclusion: The price of this unusual should be approximately 35 keys in pure. (Once again constructive criticism is much appreciated)