There's no way to tell.
You may have been able to combine a deal from an authorized dealer with a L3 for the same price
http://www.amazon.com/gp/offer-listing/B005HJWWW8/ref=dp_olp_new?ie=UTF8&condition=new
But I don't recommend it, the top seller "amazin deals" and a few other sellers for $20 on this page have been known by FiiO
http://www.head-fi.org/t/616893/black-list-of-unauthorized-retailer-in-us-amazon-updated-on-20-07-2012
To be counterfeit sellers(knowingly or unknowingly).
If you want the L3 with the E6, the only way to guarantee legitimacy while sitting at your chair right here is to buy authorized.
I guess you could call the company and ask...but then again, some companies themselves unknowingly will input goods from another supllier.
The largest legit distro's of FiiO in the U.S are:
Micca store (Micca distributor on amazon)
Parts Express
Head Direct (hifi-man on amazon)
http://www.head-direct.com/Products/?act=detail&id=114
http://www.miccastore.com/fiio-headphone-amplifier-black-p-66.html
http://www.parts-express.com/pe/showdetl.cfm?Partnumber=230-104
and they go for $28 from everyone. Micca has free shipping on all their products and bundles a Y splitter if you buy from them.
I hope FiiO doesn't go into MAP like Sennheiser and Grado do..but at this rate, it may be best to go into MAP sadly........ it may take some brand recognition down, but can help fight this problem
MAP is where the main company promises only warranty and support to you ONLY if you have bought from their authorized dealers. NExt, it also has that the authorized dealers will carry the same terms and prices to reduce competition amongst themselves.
As of right now, some of FiiO's authorized dealers offer add ons and free shipping for a price while others don't which increases competition, which in itself I believe is good. But some companies like Sennheiser don't like that.
Both systems of MAP or not are beneficial to companies, how a company is standing at the moment should decide.
http://en.wikipedia.org/wiki/Suggested_retail_price
Minimum Advertised Price
Edited by bowei006 - 7/28/12 at 12:25pm