No clean sales, using dupes.

New price: 25-27 keys

Proof:

Sale #1 and #2 (3 months)= 25 keys

https://snag.gy/kOrXLo.jpg

https://bot.tf/stats/item?def=51&q=5&ef=Green+Energy&craft=1&aus=0&ks=0

Sold twice for just under 25 keys.

Credits to Eazy Peazy Squeezy Lemons

Sale #3 (2 months)= 27 keys

https://backpack.tf/profiles/76561198097134869#!/compare/1523059200/1523232000

Sold for 27 keys.

Sale #4 (3 months)= invalid

https://backpack.tf/profiles/76561198052218255#!/compare/1522368000/1522454400

Bulk.

_________________________________________________________

SUMMARY

Sales:

25 x2

27

Going with 25-27 keys.

Feel free to add proof to support or counter my new price.