Apple confirmed to Wired that it will begin accepting online pre-orders of the iPhone 5 at 12:01 am Pacific time on September 14.

Carrier partners Sprint, AT&T, and Verizon have also confirmed the pre-order time, although AT&T‘s site has shut down in preparation for the onslaught to officially begin. On, interested buyers (i.e. everyone) can use a compare tool to figure out how much buying an unlocked iPhone 5 will cost. The 16GB model starts at $649, the 32GB version is $749, and the $64GB will go for $849. For phones attached to contracts, prices vary.

For those willing to shell out the cash for an unlocked iPhone, the wait time is still a couple weeks, as these devices won’t be available to US customers for a couple weeks and cannot be ordered online.

People unwilling to stay up late can order a phone from Walmart tomorrow morning at 8 a.m. According to Bloomberg, Walmart will be taking pre-orders for the phone for the first time, and true to form, will offer discounts on the device.

For those choosing the Walmart route, the cheapest version (with a two-year contract) will start at $189.97, even cheaper than the $199 price Apple announced.

Pre-orders will be available for pickup on September 21, along with the rest of the phones.

Gentlemen, start your engines…

Update: Pre-ordered phones sold out in 60 minutes, according to CNN, which is 20 times faster than the iPhone 4 and 4s which took 20 and 22 hours to sell ou respectively. Due to demand, the phones should be available to ship in 2 weeks, rather than the initially promised date of September 21.