its not very accurate

from those compare links i don't see how that shows they sold for 30 keys each?

First link shows it sold for a Circling Peace Sign German Gonzilla (outdated at 16) and a Strange FN Butcher Bird Grenade Launcher (4 keys), about 20 keys if you use the outdated price.

Other half of the trade: http://backpack.tf/profiles/76561198125004563#!/compare/1470096000/1470182400

Second link might be closer to 30 keys, but you'd need a mini for the Green Energy Otolaryngologist's Mirror since it's duped.

You're also trying to sell it for 25 keys on the classifieds and on Outpost . Unsold for 5 days.

http://www.tf2outpost.com/trade/28414768

There's also a third usable sale for 15 keys pure.

http://backpack.tf/profiles/76561198258578200#!/compare/1470700800/1470787200

And one other sale that's not usable because histories don't show any item traded for it.

Seller: http://backpack.tf/profiles/76561198055224435#!/compare/1471046400/1471132800

Buyer: http://backpack.tf/profiles/76561198081241988#!/compare/1470960000/1471132800

Even if you can prove the trade for the GE Oto Mirror is still 30 keys, it's probably an outlier because of the two other sales.

I don't care much to counter for this one right now, so if someone wants to borrow this and do a mini for the Gonzilla and Mirror, feel free to.