https://backpack.tf/profiles/76561198011321852#!/compare/1527724800/1527811200

https://backpack.tf/profiles/76561198096307185#!/compare/1527811200/1527984000

Seems to have sold for 14 keys (last group of keys).

https://backpack.tf/profiles/76561198826120020#!/compare/1526947200/1527033600

https://backpack.tf/profiles/76561198410691250#!/compare/1526860800/1526947200

Seems to have sold for a Green Confetti Bonk Helm before dumping it on scrap.tf.

Sales on the Bonk Helm:

https://backpack.tf/profiles/76561198074833714#!/compare/1527465600/1527552000

https://backpack.tf/profiles/76561198164036774#!/compare/1527465600/1527552000

Sold for 12 keys.

https://backpack.tf/profiles/76561198164036774#!/compare/1527379200/1527465600

https://backpack.tf/profiles/76561198177822454#!/compare/1527379200/1527465600

Bulk.

https://backpack.tf/profiles/76561198177822454#!/compare/1527379200/1527465600

https://backpack.tf/profiles/76561198146579306#!/compare/1527379200/1527465600

Sold for 11 keys.

https://backpack.tf/profiles/76561198146579306#!/compare/1527292800/1527379200

https://backpack.tf/profiles/76561198258264645#!/compare/1527292800/1527379200

Bulk.

https://backpack.tf/profiles/76561198275783474#!/compare/1527033600/1527292800

https://backpack.tf/profiles/76561198224899376#!/compare/1527206400/1527292800

Better used there.

https://backpack.tf/profiles/76561198292156436#!/compare/1526774400/1526860800

https://backpack.tf/profiles/76561198410691250#!/compare/1526774400/1526860800

Sold for 12 keys.

https://backpack.tf/profiles/76561198115721685#!/compare/1527120000/1527206400

https://backpack.tf/profiles/76561198354891760#!/compare/1527120000/1527206400

Better used there.

https://backpack.tf/profiles/76561198155476440#!/compare/1526601600/1526688000

Bulk.

https://backpack.tf/profiles/76561198322246173#!/compare/1526083200/1526169600

https://backpack.tf/profiles/76561198079540935#!/compare/1520899200/1526169600

Appears to have sold for ~10 keys. Low here but supports 11 keys.

https://gyazo.com/1a77dcc2a5855d5fd1c750665c12d3f4 - New seller at 11 keys. Sales at 11 / 14 and the Bonk Helm sale.

With the Bonk being ~12 that means sales here are 11 / 12 / 14. The 11 key is the Reggae. I'd go with 12-14 here (and if 11 key seller matures you could still resuggest at 11-14, won't change the reggae) and go with 11-13 on the Reggae.