I come to say how scandalous is the commercial attitude of this storekeeper (Electromart).
Unfortunately i didn't read the internet before going at this place.
The price of sd and cf card are three to ten times more expensive than normal shops (B and H, Pitman, Amazon etc..) idem for others objects. For example a filter uv 62 mm Bower they sold 99,9 dollars (they said its was a gift as i bought a camera lens, but they just made a discount of 4% for this filter).
When they saw I have money (a first purchase with my credit card), they assailed with many proposals of purchase, so that i was dizzy and unable to think clearly.
Is there justice for trade's abus in USA?