Surely for you US guys the value is in the title?
I don't really think "roaches", "lemons". "pups" or anything other word used to imply the bike will never be good can really be applied to an NSR because they are so easy to work on.
The '28 I bought on Ebay was more than a bit rough, 18" rear wheel, loom had been attacked with wire cutters for some reason, engine was full of 2t oil and clearly hadn't run for years, it'd been down on one side, bodywork was all but missing, the forks are from a '21 etc. etc. It was far worse than I'd hoped but no matter, a 2nd hand engine (ebay again) was just put in as I got it, a loom I'd got lying around, the old road kit from the race bike and this is the result.
And a $50 paint job looks like this, I'm sure for 10 times the price you could do better.
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Please do not PM me technical questions, if you can't find it on the Forum start a thread