Flying to Vegas, decided to see prices of fares where I can use my plethora of about to expire certs. After putting in the numbers, it pops up with this:

Tango Plus:
$739
Latitude:
$636
Executive Class Lowest:
$599
Executive Class Flexible:
$1616

It just makes no sense to me. Why would there be any inventory of Tango Plus seats that cost more than executive???