Hello i will sell Altitude0: Lower & Faster GIFT
http://store.steampowered.com/app/308080/
Price on steam: 18,99€

IN-Game items you can sell on steam market.

Features:
Extreme low flying
Fly inches just above ground level for best speed.
Various obstacles
Nature objects (rocks, trees, caves) and human made objects (barrels, haystacks, industrial blades and machines) will challenge you extra for thrill of ruthless racing.
Plane customizations and damage system
Adjust your plane by adding and removing exhaust pipes, engines, boosts and cosmetics like plane skins & stickers.
Game features silly soft body deformation systems. Wings, elevators, rudder and other body parts will twist, bend and eventually fall off.
Altitude0 Track Editor
Create your own tracks. Place gates, rock formations and moving obstacles and let your imagination fly!
Single player license mode, multiplayer (Freeway), championships
As you progress through the ranks, your license will improve.
Online multiplayer mode, especially "Freeway" mode makes it possible to join the race at any time you are ready (30 and more players).
Championship mode will test skills and endurance.
Huge open world and big vistas
Race in huge scenic environments. Fly over mountain peaks and explore tight spaces like canyon caves and funky rock formations.
Match your skills against ghost replays
Each race is recorded and replays of all players are shared online. As you get better, new players and their replays will be picked to match your skills.

I will sell it for 2 CSGO ANY CASE KEYs, or 2 TF2 Keys + 300 ce
i am open on offer.
Add me on steam :P http://steamcommunity.com/id/sv_Cebula