2 things:

1) There are some sales you missed:

https://backpack.tf/profiles/76561198129208147#!/compare/1768953600/1771459200

https://backpack.tf/profiles/76561198119349110#!/compare/1771372800/1771459200

Sold for 25 keys

https://backpack.tf/profiles/76561198119349110#!/compare/1771632000/1771718400

https://backpack.tf/profiles/76561198380634252#!/compare/1771632000/1771718400

Sale seems to be untraceable but the buyer was a quickbuyer

2) You need to mention what your sale was and not just send links with no context, so that people who don't necessarily want to click links can see where the suggested price comes from.

In any case you'll need to resuggest this at 25-35 keys since nothing counters the 25 key sale