Originally Posted by
LordHamster
THIS. For our private trips, we try to look for days/routes where confirmed GPUs are available. If they aren't, then we use miles to just "buy" a business class ticket on the long international flights.
There are a lot of times that I would be tempted to 'buy' and upgrade with miles for the delta in miles between economy and business- especially when there is biz saver or even standard offers. Just to not have to do the W Hail Mary and waitlist. If they are willing to exchange a biz seat for all the miles, why not offer this? You can upgrade for cash+miles, for a much lower mile total, but that is just like a GPU, correct?