It is interesting what you have pointed out. I am not clear if it is deception though. If you look at the product listing, it states 'OEM' Evo battery. If it is OEM, how can it also be manufactured by MDGC?
Also it states within the description, 'Let us know the manufacturer name, model and battery you need.'
That suggests they are just retailing these items, in which case there is no deception. However the store could be more professional/accurate.
Infact all the batteries/chargers are listed at OEM, so they should remove A4Wireless as the manufacturer immediately.
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