Some stores that sell bbq propane grills are: http://www.bbqs.com/, http://www.grillsdirect.com/ and www.thebbqshop.com Those are all great and trustworthy.
Any hardware store or department store or big box store will have a decent selection of BBQ grills for you to choose from. Check out walmart.com, Homedepot.com for some ideas before you go to the store.
Yes there are stores that sell a variety of BBQ smoker grills they are Lowe's and Home depot and Wal-Mart are just three of them. I would try Lowe's or Home Depot for a variety of stainless steel BBQ grills.
I don't know exactly what a pellet BBQ grill is, but I would assume that any store that sells grills will have these in their selection. Try your local home improvement stores for the largest selection available.
There is only one type of propane that can be used for your BBQ. If you go to any store that sells propane for BBQs you will be able to purchase a tank of propane. However since this is the first time you will be connecting your BBQ to a propane tank you have to make sure that you have the right fittings and hose to connect to the tank.
There are many stores which sell these products, specially supermarkets. However, I don't know exactly where is your resident area. If you be kind enough to inform me about your resident place, I can advise you about the stores which sell clearance bbq grills.
Propane BBQ grills are safe and cost effective. As long as the propane tank is properly secured and connected to the grill, you should have no problems at all. Here are some grill safety tips: http://www.homeownernet.com/patios/bbqsafety.html
You can find the instruction manual for your bbq propane grill at the manufacturer's website. You can the company's name on the label on the grill and they probably have an 800-number listed as well, which you can call for immediate help.
Electric grills are becoming more popular due to the rising prices of gas. You would more than likely be able to find one for a pretty low price at a department store such as Wal-Mart.
Any home improvement store has BBQ grills for sale like Home depot or Lowes. Even places like Wal-Mart and target sell BBQ grills and all at low prices or excellent quality BBQ grills.
You can find inexpensive BBQ grills at many popular stores. Stores that often have this item on sale are Wal-Mart, Menards and K-Mart. Meijer sells grills as well, but does not have as great of sales.
BBQ grills are available at many stores that include Wal-Mart, K-Mart, Sears, Lowes and Home Depot. I would recommend buying one that costs at least $300.00.
Check out your local Canadian Tire, hardware store, Home Depot, Lowes, or even a Wal-Mart. They will have quite a selection of BBQ grills for you to choose from.