No. If there is no actual evidence that these "custom bbq grills" exist, you should not spend any money on them. Check with the owner of the sign if you are able to because this can be a way of proving they exist.
Most major retailers in your area will have grills and barbecues for sale. Wal-Mart, Target, Sears, Home Depot and Lowe's all carry grills just to name a few options.
No, electric barbecues do not have to be plugged in - they are constructed to be portable in many cases and if you look at the pictures you'll never see a plug in sight.
Old fashioned charcoal barbecues are available in walmart stores. Other types of grills like gas grills are also available for better efficiency than the charcoal barbecues. Also, charcoal barbecues create more smoke than the gas grills.
FireMagic sells grills & barbecues, burners and the accessories that come with it. They have gas, electric or charcoal grills and barbecues. They have portable or cart grills. Accessories include vent hoods, grill covers, griddles, woks, pots, tongs, brushes and cleaning materials.
Fish Grills
I believe that Barbecues galore is the company that makes Bar-B chef grills.
Barbecue grills use propane, a kind of fossil fuels.
If you're looking for the best quality, you should check out the Weber grill website. They offer lots of really great quality gas and charcoal grills.
The replacement of the grills on a barbeque really depends on how often the barbecue is used. I find that we have to replace our grills usually once every two years because they begin to rust and the flames tend to flare up when barbecuing.
You can find charcoal bbq grills at sears, or the home depot. They have a pretty decent selection there for grills, but it ranges from $200-$500. I reccomend that you go home depot, since its for convienvce and most likely closer to your house.
Barbecues are available at most home improvement stores (Lowes, Home Depot, Sears) and general stores (Wal-Mart, Target). You have to figure out what size you want, coal or gas, and amenities.
Yes, they are pretty high up as far as cost goes and they look quite nice as well. They are durable and make for really nice grills for summer barbecues.