I hope you pulled off any potentially working parts before sending them. Also, there are still some out there that will buy non-functioning systems for the parts. It's always worth putting them up even if it's just for the cost of shipping and handling.
-Nyle
I have had to consign THREE Amigas to the trashcan 
I did what I could and removed all socketed chips, and various bits like non-yellowed bottom half of cases and Kickstart switchers etc but the rest had to be sent off to the great recycler to the sky.
Sad day indeed when you can't rescue them.
(battery leakage on two A1500s and an A500 who's parts to repair cost more than the sale price of the machine due to horribly yellowed top case before anyone accuses me of murder)