Please understand something I have just learned.
You can refoam a driver generically, but if you are an audiophile, it is important to realize that the suspension of a speaker is one of the MOST critical aspects of it when it comes to performance. It is what moves the speaker, and helps the music come out.
I recently had two speakers reconed, and while the gentleman charges all different prices depending on the driver and the foam he needs to use, it is key to getting the right sound from the driver. He looks, and more importantly "feels" the driver, and then chooses the best surround for the job. The end result will be the best music, as opposed to simply repairing it so it will play again.
Most of what is spent on good electronics and ancillaries is wasted on a driver that cannot perform.