If you're looking for the ultimate bbq concession trailer eBay is a good place to start your search. A local company located in Brandon, FL, Olympia Blends Products and Services, LLC has a brand new 8 X 32 ft bbq concession trailer for sale on eBay. They also sell an eBook about starting a concession business that sounds promising.
Here's a list of some of the NSF certified equipment installed in the Wells Cargo trailer posted in the advertisement:
-NSF APPROVED 96” long commercial hood system with grease extracting exhaust fan
-NSF APPROVED commercial stainless steel 23 cu. ft. stand up refrigerator manufactured by True, model T-23
-NSF APPROVED commercial stainless steel 23 cu. ft. stand up freezer manufactured by True, model T-23F
-NSF APPROVED commercial stainless steel 23 cu. ft. solid door stand up heated cabinet manufactured by True, model TH-23
-NSF APPROVED commercial 2 well LP steam table (spillage pans and inserts not included)
-NSF APPROVED 18” stainless steel work top table with an adjustable underneath shelf
Three - NSF APPROVED commercial 40 LB LP fryers with 2 baskets each
-NSF APPROVED 36” commercial LP flat top griddle
-NSF APPROVED 36” commercial stainless steel equipment stand with an adjustable underneath shelf for griddle
-NSF APPROVED commercial LP Ole Hickory Smoker with revolving racks and foot switch, model EL-IB (includes smoke extractor and cook and hold gauge to monitor meat - cooking capcity: Ribs (3 & down) - 60, Baby Back Ribs - 90, Boston Butt - 50, Turkey - 30, Chicken (whole) - 50 (half) - 135, Brisket (12 lb) - 40, not to mention you can access this smoker from the inside of your concession so you don't have to walk in and out of the unit to feed your customers
-96” long stainless steel backsplash under the hood
As they say, "quality doesn't come cheap."