Originally Posted by takeshi
Most might be but it really depends on the seller -- you do have to perform leg work with any online purchase. My P513/SPN5400 was $6 but it's the real deal and did not ship from China. It also does exactly what it's supposed to do (supply 950mA so I can use GPS and still have a net charge).
The "people on a high horse" are the ones that assume $$ means something in and of itself.
And very true with regards to the seller. But some items are more prone to being knockoffs (memory cards).