During the past week. Last Saturday MIA/DFW 321ceo (5:18AM departure) paid $140 for an upgrade, upgrade list rolling off the board no one cleared-a 5:18AM flight mind you, DFW/PHX 321neo paid $140 for an upgrade, 2 people cleared at the gate including a dead head pilot (that sat next to me), PHX/SBA A319 paid $119 for an upgrade, no one cleared. Last Tuesday SBA/PHX CR700 paid $54 for an upgrade, one person cleared at the gate, PHX/TUS 737 wasted $49 on an upgrade, 3 people cleared at the gate. Yesterday Thursday TUS/PHX paid $54 for an upgrade, couple pages of upgrades no one cleared, PHX/MIA 321 neo sprung for $272 for an upgrade, endless list no one cleared.