I just upgraded today at $89 per seat from IND to MCO. A little pricy, but it was a splurge. It was actually a gift to my Mom and Dad. We figured they'd be spending $100 on luggage anyway...and we had already spent $12 on seat fees, and that was credited to us. So, altogether, it was $66 more than they would have spent anyway on the baggage fees, $33 per person.
I am not saying I would do it every single flight ever. But, I didn't get them anything on their anniversary or Mom's birthday...I figured an upgrade to business class was a decent gesture.
Can I piggyback on this thread a little bit? Business class gets two checked bags. Do the checked bags have to be in the specific passenger's name, or can we leave the tags for the actual bags' owners on the outside?