Classifieds :

http://backpack.tf/classifieds/?item=Gunslinger&quality=11&tradable=1&craftable=1

1 at 20 | 1 at 23 | 5 at 24

Sellers below 25 :

http://www.tf2outpost.com/trade/25374681 - 20

http://www.tf2outpost.com/trade/25375491 - 22

http://www.tf2outpost.com/trade/25367194 - 23 (w/ spells)

http://www.tf2outpost.com/trade/25373856 - 24

http://www.tf2outpost.com/trade/25356707 - 24

http://www.tf2outpost.com/trade/25376786 - 24

http://www.tf2outpost.com/trade/25251416 - 24 (1 week)

http://www.tf2outpost.com/trade/25368385 - 24 (gifted, support proof)

Unsold at 24,6 :

http://www.tf2outpost.com/trade/25319977 - 5 days (w/ spec. ks and part)

Unsolds at 25 :

http://www.tf2outpost.com/trade/25354283 - ~2 days

http://www.tf2outpost.com/trade/25353203 - 2 days (spec. ks)

http://www.tf2outpost.com/trade/25335887 - 4 days

http://www.tf2outpost.com/trade/25333985 - 4 days (w/ ks and part)

http://www.tf2outpost.com/trade/25323456 - 5 days (w/ part)

http://www.tf2outpost.com/trade/25302609 - 1 week (w/ spec. ks and part)

Conclusion :

Conservative drop as most of the sellers are young.