The answer is: maybe.
I had a couple of Northgates that I really liked, but they had dead keys. I should have gotten out my soldering iron and replaced them, but didn't feel like it.
I currently have an actual Alps Electric brand keyboard with whites, and they are stiffer than I remember from the Northgates.
Buying a fresh virgin is always preferable, and you will have your best shot at a really nice one.
$200 is steep, but if you have the money, it really isn't insanely out of line.
edit - I just went to ebay, and see several that I wouldn't buy. Make sure that the layout is something that you would be happy with. I have come to love the function keys on the left, but they only go through F10. Some models have both sets of function keys, some don't.
I don't mind a bigass Enter key, but can't abide a small backspace.