If that was a master, shouldn't it be on a larger-width tape? It's hard to guess the size from that photo, but it looks 1/4" to me.
But then again, lets assume he does get $350 for that 2" length. If the original tape was 2500 feet on a 10.5 NAB reel, that would mean he has 14,999 more pieces to sell, with a profit potential of $5,249,650.
Silly........
Tj