我没有.com: Wo da po ni de ji lu le, in tetris!
喷墨 too expensive if you often print documents
激光 is better and expecially share with your neibours or friends.
1~5 cents per page (depend on how many peges they want to print) if your neibours or other people can take paper by their own.
Just a imagination, I don't know if it is practical.