I'm on Ebay in the Amiga section everyday. You can probably get $5 to $20 each for the working A500's, maybe a bit more. The dead ones are useful for their custom chips that are mostly socketed and can easily be pulled and put in other machines for replacements. If you are interested in seeing what great EARLY computing looked like, keep one and go shopping for some software on Ebay or elsewhere. There is a ton of shareware and commercial software that has been released free as well on the Internet. Have fun reading up and playing with and/or selling your collection.