Price manipulation for my dream set ( ͡° ͜ʖ ͡°)

Constructive criticism please!

Classifieds: https://gyazo.com/0508a4b78b8e3e16c640e3d8a6d780b9

3 sellers @ 13 ref (4 for sale, 1 mature, 2 mature-ish, 1 young and invalid)

2 sellers @ 14 ref

1 seller @ 14.77

The rest of sellers are 1 key and above.

2 buyers @ 13 ref (1 invalid)

1 buyer @ 12.22 (same buyer as 13 ref buyer O.o)

The rest of buyers are 7 ref and below.

Seller Profiles:

http://backpack.tf/u/76561198308976829

http://backpack.tf/u/76561198318519201

http://backpack.tf/u/76561198079932242

Item Histories:

http://backpack.tf/item/5146362803

http://backpack.tf/item/5393647892

http://backpack.tf/item/5288047272

http://backpack.tf/item/5368011378

Counters, suggestions and feedback is appreciated.

Thanks!