Realistically, how long does one have to preorder the iPhone X before they run out?

Everything that I’ve read states within a couple minutes if you want it in the near future. I’m still deciding what phone I’d like next, but I’m going to preorder it at midnight just to ensure I’ve got one. That way I can sell it and make a quick buck if I decide to go another route.

I know a few people who picked up an 8/8+ and even they are planning on upgrading to the X when it comes out. Demand should be huge, so I’ll either have a nice new phone or some spare cash to play with.

This is exactly why I bought the 8, my current phone, iphone 6, was unusable. I'll upgrade to the X if i feel the need to in 6 months and sell my 8. I'll lose a couple hundred bucks but whatever.