Price change suggestion thanks to Payback.

Currently the only one that is in market circulation...

https://marketplace.tf/items/tf2/31091;5;u134;strange

• June14: $190 / $1.99 = 95.48 or 96 keys
• July12: $70.05 / $1.99 = 35.17 or 35 keys
• July13: $150 / $1.95 = 76.92 or 77 keys (price that i bought it)

Note: 95 keys and 35 keys prices are one at the same it just resold at the same person and more likely the one who setup the buy out price currently. There were a price sold on Feb 23 at $190 and March 18 at $50 but I dunno what the price of keys at that month.

if there are new sale, changes or additional proof, will gladly update my suggestion.