I unboxed those It's A Secret To Everybody Ze Goggles. 1 of 2 but the other one has never been traded. 9 different owners until now --> 8 deals, 2 unknown.

1st deal: Skull Noble: 12 uu = ~10.8 pure

2nd deal: Moon Pickel + Flies Belt: 12.4 uu = ~11.2 pure

3rd deal: Unknown, user cashed (probably) out.

4th deal: 3 unusuals --> Secret Goggles. I'm asuming that deal happened: ~10.3 uu = ~9.3 pure

5th deal: New items without goggles: 10.5 uu + 1 bud = ~10.5 pure

6th deal: Was bought here with all that stuff. Secret Hotdogger isn't priced yet, I would say 6 is a fair price. So 8 uu + 55 keys = ~9 pure

7th deal: Sold for an entire backpack including moon jeecap (~6.5). 270$ --> 4$ = ~8 pure.

8th deal: Swapped the cap with the next owner, and so he did with the goggles. Maybe brokering.~ Btw here offered the second current owner his secret hotdogger + the blizz pe again, but not the 2 buds in keys he got. ;)

Current trade: The guy that owns the secret hotdogger now offered it with a bubbling lucky shot for the goggles.^^

Conclusion: The first two trades were at halloween, price dropped since then. The two deals in the middle were from a scammer. Basing it on the latest two deals I would say 8-9. Higher than cloudy.