Originally Posted by
davetravels
Interesting concept.
How much would, say, $100 in MQDs cost? Would it be . . . .
1) More than $100, because of the convenience of not having to fly . . . or . . .
2) Would it be less than $100, since they're not actually having to provide you with a seat, that someone else could actually purchase?

At the end of last year, when DL sold MQMs the MQDs for the purchase counter for 2014. So effectively they were making targeted offers of the following sort:
X MQDs for $X with 3,000 MQMs included as a bonus
Y MQDs for $Y with 5,000 MQMs included as a bonus
Z MQDs for $Z with 10,000 MQMs included as a bonus
This says that 1 MQD costs less than one dollar but the exact price would depend on how one values the MQMs, even if just for rollover.
However, this presumes that people who need only MQDs for status will be given such personalized offers.