Several years ago I purchased a Bubba Keg grill. It is the same style as a big green egg but made of metal vs. clay. It is double wall with insulation between the walls. Holds heat very well and can be regulated from low and slow to blast furnace !
I purchased it from Home Depot. I think they are now marketed under a different name but I'm real happy with the performance and it was $300.00 or so less than the BGE. I do not know where they are made. I always use lump charcoal, not much needed to cook a meal they are very efficient. Good luck in your search.