So many people confuse Original Designer Sunglasses with replicas or alternative versions. An easy way to spot a fake one is paying attention to details. For example: You need to have the model number in order to compare the original with the fake one. All manufacturers provide each of their sunglasses with style or model numbers always accompanied by color codes. Do your own research before attempting to purchase impulsively. Ask the seller for further information, they should provide you with it easily. Most reliable sellers provide you with this information upfront. Look at their pictures and if you are still not sure about this follow this rule: Most original designs will not cost you $5 or $10, that’s for sure! Unless the item it’s been used or have some damages I’m pretty positive that you will get it for much more.
At Ebay you can find great deals, but you can also get ripped off by dishonest sellers.
Is almost imperative, but not required that the seller could be able to offer you a Warranty Manufacture Card for at least 1 year. This is only reasonable if the item is brand new, of course. There are some rare cases where the seller can offer you the remaining warranty in case he is selling it as used for a few months. In that case you can enjoy a great savings plus warranty in case the item gets damaged.
Pay close attention to details, as cleaning clothes or cases that usually accompany the sunglasses. The also have the company’s logo, like Prada, Versace, Giorgio Armani. If the sunglasses does not come with these accessories does not mean they are fake. It can mean the owner lost them or didn’t purchase them directly from the Company, but through an outlet store and so on.
Most people on Ebay are honest and reliable, but paying attention to products details and seller’s feedback can save you lots of troubles. If you find out a seller sold you a fake product you should report it and leave appropriate feedback.  Research! Research! And research! That is my advice to all of you wanting to purchase an original item. Check them out on many search engines to see if reliable online retailers are selling the same model number, color, and style. Also remember that some old styles might be more difficult to find on search engines. It’s very probable that you will find them, just give it try.
Most important, there are other brands like DG eyewear that can be easily confused with D&G. I myself sell DG eyewear as other power sellers do. I do not claim them as D&G, but as DG eyewear. The copyright exist legitimately in US and UK.  If you are not sure if you are purchasing a real D&G just ask the seller. They should answer this question as I do.
I myself own about twenty pairs of original designer sunglasses. Every time my husband wants a new pair I made an extensive research within Ebay to make sure I’m purchasing an authentic pair. Take your time; impulsive buyers tend to buy from wrong sellers. So, relax and enjoy bidding on Ebay!