I was actually curious to see if this actually exists, originally I thought a pi 1 with a cheap keyboard and ssd, but of course the pi 1 doesn't support ssd's anyway. In the end I found an old thinkpad on ebay that technically meets the spec (E-50, i3, 8gb ram and 128gb ssd), though preowned is kind of cheating. New I think you might be right, even without the keyboard.

To be clear I think the price of the pi 500+ is pretty much fine for what it is, I was just curious.