I'd rather have a real anvil, too, but have you priced one lately?
This one didn't cost me anything, if you take out some welding rods and a nut and bolt. An equivalent 50 lb. standard anvil you would buy from a quality blacksmith supply company (you probably have one or two of those in your neighborhood) is more than $300.
Ok, so the price is a factor. But what about usability - can you do the same things with it? Well.as they say, it's as good as a real anvil, if you haven't used a real anvil. But, truthfully, I have, and I can say that it is nearly as good. Almost.
A word of warning: this Instructable requires cutting steel with a torch, and arc or Acetylene welding; at that stage, and all others, wear appropriate protective equipment.