Yeah, that's the main "problem" with Tony being so popular. Since he makes everything himself, he can only make so many, and as straights get more popular it becomes more and more difficult to get your hands on one.

According to his website, he's on vacation right now, but I would suggest you call him next week and ask when the starter strops will be back in stock. I'm assuming you could put in a pre-order for one as soon as he has them back in stock.

If you can't wait that long, Classicshaving appears to have a good selection: http://www.classicshaving.com/page/page/522944.htm.