That's enough negativity, Ed!
I don't really know anything about the collectibles market, but I would think the most recent 13 years of Transworld mags might be hard to sell all at once. They only shuttered a little over a year ago, so a lot of those issues still exist in people's homes and are relatively easy to find. You might try selling the older ones (say 10 years +) one-by-one on eBay or something. I'm sure the whole shebang will be worth something one day, but you'd have to wait a long time. Anyway, very noble cause, good luck.