You put that $10 in the bank. And then you keep doing that. It's called an emergency hardware fund. Eventually you wind up finding $200 in there when a graphics card that was suddenly made a legacy product and needs replacing. Then hand the old graphics card down to the unlucky person who wound up with an off the shelf ATI that barely understood what OpenGL was.
Something tells me this is a more common thing in New Zealand to do then elsewhere in the world, as I never hear of anybody else doing it all that often in other countries.