There’s no easy way around painting a room – and it can’t be both cheaper and quicker. You need to do all the preparation before you get started the long and hard way. If you use cheap masking tape, you can be guaranteed of spending more time fixing up the paint it tears away. Use a cheap paint and you’ll spend twice as long painting the watery stuff on to the walls as it thins. Use a cheap roller (or lend your expensive one to a friend and it comes back with a hole in it) and you’ll end up on your knees for hours scrubbing all the paint drips out of the carpet. Maybe its not worth the effort!