Yes, If they are going to continue to sell something that has no future, no updates, no bug fixes, no support (
Oh wait, nothings changed there), they should at least
considerably lower the prices. At the very least they should have a big arsed banner that can't be missed or something, explaining that the product is dead and will receive no updates, bug fixes or support, so as any potential buyer is fully aware of what they are getting themselves into. That would be the decent thing to do, that or just not allow any further sales.