As will everything technological, memory cards are decreasing in cost by the month. It has almost reached to point that their cost is inoffensive.
In preparation for another short trip, Mongo purchased an extra for the D800 during this week.
He purchased a SanDisk Extreme Pro SD HC 1 32 gig (95mb/sec) card for under $90. Mongo thought this was comparatively a very good price and, in the overall cost of card/performance affordability, also much more reasonable than in the recent past.
Before Mongo gets the inevitable posts saying , "but is it a genuine one ?" - yes it is. The reason Mongo mentions this is that there have been confirmed reports of fake cards. Mongo does not have the time to photograph the card (back and front) and point to some of the features which dispel that it could be fake. A simple practicable test is also to set it to full frame RAW and hold your finger on the shutter button (with a fresh battery) and see how many frames you can manage before it stops shooting.
Others who will tell Mongo - " but 95mb/sec is only the 'up-to' speed and not the actual speed" - yes, but everything is relative and this card is relatively faster than one that says 45mb/sec or 60mb/sec etc. of the same brand.
Think of this as a good news story - the things we need to take photographs more efficiently are coming down.