Costco is offering 2 deals on iphone 13 series via TMobile for pre-order. The deal is yet to be posted on their portal but available in wearhouse.
1) buy one phone with trade-in for upto $460 off, no line needed
or 2) buy 2 phone and get $720 off, one new line needed.
discount will come in a virtual prepaid card, which is usually released within 60 days, phone can be unlocked after 40 days.
Costco gives a 10% off on retail price, for example iphone 13 pro max 128gb is $989.
Color choice in Costco usually limited.
Same deal available for iphone 12 series as well.
https://membershipwirel