I purchased a Q500 4K in a Best Buy Store in New Hampshire. New Hampshire does not charge sales tax. Did not have an opportunity to open the box and check everything out until I got to San Antonio, TX for a holiday visit. When I got to San Antonio I finally opened the box and went about getting the unit ready for it's maiden flight. Unfortunately missing from the box was the ac wall wart to charge the controller. I packed everything up and headed for the local Best Buy hoping they could either provide an ac adapter out of another unit or exchange the whole package. The Best Buy staff were not very friendly in trying to assist me with my problem. After 3 people inspected the entire package it was finally agreed after 25 minutes that I was correct and the ac wall wart for the controller was indeed missing. They got another unit from the stock room and said well "before you leave let's make sure this one is intact". The attitude I sensed was that they thought I was trying to pull some sort of fast one. Great idea I said "let's do that". When we inspected the replacement package I noticed that the white programming cable was missing from the small zip lock bag. I pointed it out and after some long sighs and being red faced because their package was also missing an item and some more deliberation it was decided they would take the cable from the unit I had brought in and give it to me. OK now I have a complete Q500 4K. I'm getting excited because this is my first drone and I'm quite anxious to get it up and give it a try. The guy at the customer service does his bar code scanning thing. He scans my receipt, the bar code on the unit I brought in, and the unit I was taking. He than says ok that will be $98.92. Wait... What .... $98.92 dollars for what? Well, Texas does charge a sales tax. 8.25%. I said "I'm not purchasing anything. All your doing is exchanging / replacing a defective item". He says "I am just telling you what the system is saying". I asked for the manager and the guy behind him says "I am the manager and if the system is asking for money than that's the way it is. I said you can't tell the "system" it's wrong? Manager says "nope". Bottom line... I told them fine I'm returning the item. Credit my Best Buy Charge Card for the return. Now you've lost a $1200 sale. I will purchase another Q500 4K when I return home. I very much doubt it will be from Best Buy. This has left such a bad taste in my mouth I might very well stop being a Best Buy Customer and cancel my charge account after I pay off the remaining balance from all the purchases this valuable customer has made. OK, I got that all off my chest. I feel better now John O'