International Electronics superstore review: Products mark up

Went there to buy a lens I needed for my DSLR camera.
They ended up selling me a filter I didn't require for a mark-up of over 800%.
http://www.amazon.com/Digital-Professional-Series-48x58mm-Deluxe/dp/B001PNSG2K/ref=sr_1_3?ie=UTF8&qid=1368399777&sr=8-3&keywords=digital+advance

They also charged me for some lens cap holders which they said would fit perfectly my 4 lenses and they didn't. I saw those cap holders in amazon.com for less than $ 2 each and they sold me those for $ 29.99 each.
http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Daps&field-keywords=lens+cap+holder&rh=i%3Aaps%2Ck%3Alens+cap+holder

Next day I returned to the store for a refound on those products with all the boxes and they said they have a no refounds policy.
After some long arguments with the store manager, they agreed to let me pick other products from the store.
Apparently, the only product in the price range ($ 300) was a Canon EF 1.8 lens which is listed in amazon.com for around $ 120.

Be careful, you leave the store thinking they are all nice and helpful people who might even gave you some discounts but when you go home or to your hotel, you find out you were completely ripped off with products that most probably are unuseful for you and way marked up prices.

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