My thoughts are yes, DO make arrangements for a discounted sale, not that the money matters to YOU at all, but because it will make an impression on the seller. He may not have known that the wood had bug damage but he certainly had to know something was not quite right and failed to mention it.
With the amount of damage I can see, there is likely even more damage inside from what my reading told me. You might be better off to make a nice new display platform that you feel is structurally sound as well as completely bug free.
If you decide to keep the base and work with it, I would do the kiln drying. Here is a site I found to give reference temperatures and times.
http://www.thermapure.com/pest-servi...oring-beetles/