if those brands require you to be an authorized reseller and you are not - you could get in major trouble and ebay WILL shut you downa picture on a website could be a stock photo - doesn t mean you will get what they send you - I would never buy anything that has issues with potential counterfeits over the internet
If they are cheap, they are fake. If they are from China, Singapore or other Asian country, they are fake. Never sell what you can t PROVE is a legitimate product. If you want to sell successfully on ebay, you need to find decent sources of undervalued items. Like thrift stores, flea markets, yard sales. Not the internet. The internet is full of people trying to make money at the expense of other people. So it is full of fake sites trying to steal your money.
find out where they come from