I think a lot of reviewers here don't have enough experience in pellet grilling to recognize how many features are packed into this unit for the money. I'm not going to talk about the usual advantages of pellet grilling in general in this review (i.e., clean flavor, "set and forget", less ash,). Instead, I'm going to focus on what makes this one uniquely better than the other grills in it's class.
You’re concerned with ongoing costs for fuel and power: The wood pellets used with Traeger grills are more expensive than propane or charcoal. You can expect to spend $1 to $3 per grilling session using wood pellets. Propane is far less expensive to operate in a grill, while charcoal fits somewhere in the middle of the cost range. And beware of cheap pellets from third-party manufacturers that contain softwoods like pine. They burn much faster than hardwoods, so the end cost won’t be that much different because you’ll use more of them. And they can introduce unwanted chemicals and contaminants to your food. You will also have some electrical power costs with these Traeger pellet grills.