If the demand was "crazy", they wouldn't have lowered the price. How "crazy" is the demand depends on the supply.
Eg:
If you can quickly produce 20,000 items, which unitary cost is around $1-$2, and there is a "crazy" demand for a) 5,000 items at $200 and b) 12,000 items at $100, it would be obviously more profitable for you to go for option b).
If suddenly your production capacity spikes to 80,000 items, it's way more profitable to sell all of them at $20 than selling only 12,000 at $100.
It's not the vendor who sets the price, it's the market which functions following supply&demand.
I'm ashamed to be explaining such basic things, but some of the guys in here seem to do not understand basic free market principles.
Some of you think the "demand is crazy" because you re-sold 10, 20, 30, 50 of them on ebay. That's peanuts. We should assume supply for these USB thingies should be in the orders of hundreds of thousands.