Over here it is fairly common for motorcycle clubs to have tire changing (and calibrating) machines. They also have manuals, stands and those special tools that you usually use only once. You can borrow them free of charge. Changing a tire costs zero.
In addition, if you have some parts that for some reason you can spare (like OEM levers if you up-graded to pazzos or OEM rotors or whatever, half-worn sprockets, etc.) usually you give them to the motorcycle club. Who ever get's them, pays what ever he wants and the money is used for more tools, machines, etc. .
Oh, and a 0,5 litre beer goes for €0,60...