To what extent? It would be hard for me to imagine seeing the royals go for 800-1000. That's just silly! However, another retro will come along, and the prices for 1s will PLUMMET. The same thing when the Penny Foams came out, they were going for $500ish, and look at the Foams now? They are 'skittled' out.
Remember how everyone used to pay $350-400 for TB3s, or Black Cement 3s? All it takes is for JB to retro, and play out the shoe and the prices will saturate. We ain't even talking about looks, fit, and material here.
At the end of the day, they're just shoes. I wouldn't be surprised to see JB retro the 1s again in a few years time. They might as well milk consumers while they still can!