Have any of you got experiences to share with regard to the Brussels Airlines Plusgrade system (or any other airlines' Plusgrade system)? Here's my specific question: Any suggestions for how much I should bid for a Business Class upgrade on a 8-10 hour legs between Brussels and an African airport?
FYI - if you're not familiar with Plusgrade, here's what Brussels Airlines says:
LET'S GET YOU UPGRADED!
Plusgrade allows you to make an offer to fly in a higher cabin class and enjoy all its comfort and services!
From time to time, we have seats that become available at the last minute in our b.flex economy+ and b.business cabin, and rather than flying them empty, we're happy to put you in that seat!
I'm a big fan of markets and specific user fees, so I love the idea. I just don't have any idea how high (or how low) to bid.... Any insights (or war stories - successful or unsuccessful) are welcome.....