Maybe in your country but in mine, 10 keys x aprox 1,75€ = 17,50€ and in the store it costs 19,99€
Also let me say you that nobody asks u what do u think about hte price, if u like it, buy it, if not, go fuck yourself and dont ruin my business.
Finally, let me give to u some links with KF2 at the same price:
http://www.steamtrades.com/trade/gRQlw/h-killing-floor-2-the-witcher3-skyrim-le-shadow-of-mordor-pe-elite-dangerous-all-row
http://www.steamtrades.com/trade/vgmsb/h-killing-floor-2-h1z1orireign-of-kingscsgopayday-2-talosspecopsxcom-wtf2csgo-keys
http://www.steamtrades.com/trade/jGIzf/killing-floor-2
http://www.steamtrades.com/trade/j386l/eu2-store-killing-floor-2-skyrim-le-more-row-w-10-12-csgotf2-keys-paypal
http://www.steamtrades.com/trade/e4DJB/h-killing-floor-2-killing-floor-2-deluxe-edition-skyrim-skyrim-legendary-w-tf2-cs-go-keys
http://www.steamtrades.com/trade/aHexe/h-skyrim-weeksale-killing-floor-2-w-csgo-keys
And please, if you dont know about what are u fucking talking, please dont talk ;D
Killing Floor 6-Pack Gift ROW (1 copy)
10 CSGO Keys, offers.
Please add me on steam if u are ok with the price.
If u want change for other games or have a mixed games-keys offer please post here first.