I have this on my EP-330-NG https://www.amazon.com/exec/obidos/ASIN/B00L453LMO/tvwb-20
It has a lifetime warranty. It has already lasted twice as long as the $30 Classic Accessories Veranada cover I had that didn't make it to the end of the warranty.
It's missing the warming rack. Looking at the inside of the lid it definitely hasn't been used much. Offer him $600 cash and I bet he'd take it.
I paid $750 for a new EP-330 in the Spring of 2011. Haven't replaced the first thing on it yet, it's a great grill!
You can't put cold or room temp food on a hot stone, this will happen every time. You have to put the food and stone on at the same time or preheat your food too. Reverse sear.
My brother heated his grill with a stone on it then trough a pizza on it and 30 sec later, pow! In pieces it was...