If you look at Olympic's website http://www.greatkiln..._PRICE_LIST.pdf , you can see what they charge for a lid in the replacement parts page. That would give you an idea about the $100 credit offer, which sounds low to me, especially when you consider shipping from Georgia to South Carolina. But, that's just for your information. I also recommend getting the lid replacement.
Thanks for that link. It looks like I'd pay nearly $400 for a lid plus shipping on 120 lbs AND I'd have to install it. I agree; not a good deal. Jayne