In the past this price of $99 has never lasted longer than a day and tomorrow it will be back to $118 or $128, if history is any indication of the future.
You would think that would be the case but surprisingly it's not, they're all coming from Amazon itself. For whatever reason Amazon will drop the price for 8 to 16 hrs and then bring it back up. It may well be a computer program that automatically drops the price when their inventory hits a certain number or ? But either way, the price changes are not due to different sellers. Weird, huh?
I bought a 1TB WD drive recently that will fit in a shirt pocket. It can go in a camera bag without taking up much room. They are expensive by your standards. they run about $65 or so.