I think that's because it's not open to everyone.
Yeah it's a difficult thing to quantify to be sure. On one hand I got more orders in under 1 minute than ever before. On the other hand however I am sure not as many people are checking it out this time because indeed it's a closed sale.
I would still say though in my opinion the hardware seems to be handling things fine, at least from my vantage point.
Regarding the 2/3rds thing WRXChris mentioned,
That's a very rational way to look and it seems reasonable, fortunately/unfortunately it's a good bit off. Each Dibs groups (4 & 5) were bigger than any singular sale I have done previously.
K, back to staring up at the mountain... this is going to be brutal.
LoL =P