I'd jump on it. I have lots of fabric that is ten years old, and it's fine. If you used even a third of them, you'd more than break even, since a third of them would be $300 at a dollar apiece, and most LQS FQs go for more than that. With a lot of 1000, it certainly seems possible that there are either duplicates, or whole lines that coordinate, so you could do lots of things. How exciting for you!