The problem with the above example is these chips sell for $9 new each, so 81 would be $729. If you are someone into electronics and need the Erasable PROMs for your projects, buying this lot would make sense, Even if only half of them were still in working condition. When I was in electronics (high school, Army, and College) we used these to build very simple computers. You can build controllers with them. They fit in removable sockets and can be erased many times over with UV light.
I'm not saying ebay is a bad place to sell things. Some times memory and processors go for crazy prices. Just don't be disappointed. There may be more to the story then just a pile of chips.
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