Probably about $5 an hour
I make metal designer furniture on the side, usually prototypes for a designer ... learned quite some time ago that within reason, don't do anything that would only be appreciated by another craftsman ... as the customer doesn't give a flying F. They want a quality product for sure, but the tiny details, or methods of construction that only another welder/fabricator/carpenter would notice ... well, another craftsman is not your customer, so they never get noticed, you never get paid for them.
So what I'm saying, if you do it for money, use the power tools, use the screws, because the customer isn't going to notice, and if they do, they aren't going to care. Do a good job, just don't spend hours and hours doing things the average person is incapable of understanding.