When you start getting into things like this, there's the initial price, then all the pile on of tax and the infrastructure needed to run thing. It's like getting a boat. For a mere $55K you can get a small one... but that is merely the cost of entry.
So you're right. If the $42K price tag didn't make you blink, the additional $2700 in tax, and the $2K to $3K for the work in your house are going to financial hiccups. But it means the cost to start is $50K, not just the price tag.