Idk if buy sticky launcher or grenade launcher ( both australium) tell me which one. Also do you know if there is any site that let you sell ur hats etc for money??

So, I've been trying to work towards the Australium Grenade Launcher. I was BLACKwondering if anyone knew about a site or program that can view my inventory, allow me to take items from it and put them onto a grid or something, and have it calculate the price in keys.