Sold for 775$ (Key price is 1.77, rounds to 438 keys) on Marketplace + a Strange Professional Killstreak Gunslinger (Sellers at 38, buyers at 36.39). Just rounding the total to 475.

Proof:

https://gyazo.com/450ac58a089328741128edce8c9ac753 MP.tf sale

https://gyazo.com/97f0a1b21c80c8108183dc33c047a74f Prof KS Gunslinger from OW

Buyer does not intend to resell, and even if he would, it is now untradable forever (rip)

Thanks, and have fun!

If there has to be further proof in form of chat messages etc. just let me know