I've had mine on all day. Made a few DX contacts today. Spent a couple hours this evening with a few guys on SSB.
Holding up real well, not major noticeable drift issues. Everybody likes. Thing is very quiet... +++++
So I guess the question I would ask is do you feel like you are getting your moneys worth, misrepresentation aside?
They aren't the "go to" presidents from back in the day. Not like the Grant, Lincoln, Madison, or the 2510. But I wouldn't blink at paying $100 for a good shape original. If this is just new old stock, you can expect some age problems, but is it worth $170 to you?