free

Yes. Unlocked iPhones that aren't connected to apple.com can be used with any network.
If you are looking for an ultra-high-end iOS device, the 13 Pro Max retails at the same price as last year’s iPhone 12 Pro Max. Although Apple is rumored to be discontinuing the 12 Pro Max, you might still find them on shelves at a lower price. Both devices are 5G capable and have a strikingly similar design, so it may be worth checking out the older device if your goal is to save some cash.
If you are an AT&T customer or Verizon customer, you can purchase an iPhone online and add a line.

iPhone 13 Pro Max 256GB Price Sierra Blue - Apple
iPhone 13 Pro & iPhone 13Pro Max prices.
Notable is the inclusion the Apple A15 Bionic processor - Apple claims it is half the speed of other mobile processors. Both the Pro Max & Pro Max now have an upgraded 5-core CPU. This is in addition to a 120Hz touchscreen, upgraded battery, camera sensor improvements, and a more powerful processor.

Apple PayFootnote 2 allows you to use your Apple Card with Apple PayFootnote 2, and get 3% off all Apple purchases.
Apple iPhone 13 Pro Max and iPhone 13Pro Pro Max for FREE
iPhone 13 Pro Max 256GB Price Sierra Blue - Apple

If you are an AT&T customer or Verizon customer, you can purchase an iPhone online and add a line.
Apple iPhone 13 Pro Max $1,099 $449 with an eligible trade-in from Apple (opens new tab). If you are going unlocked, unfortunately, you will not be able purchase a new device directly through Apple. Apple offers its iPhone 13 Pro Max deals, including a trade-in rebate up to $650. Although it isn't the best deal on the market it can still be a significant savings. If you want to have plan flexibility, an unlocked device is a great option. Total cost: $449 (maximum savings)
Yes. Unlocked iPhones that aren't connected to apple.com can be used with any network.