"I read on another forum that some companies or brand owners will limit the distribution of their products to a certain region only so although you bought your stock off a legit supplier you might not be able to sell it right off - may this could be something you can look into."
Richelle's point is quite correct, in fact this often causes a lot of confusion when dealing in liquidated products, as a lot of 100% authentic designer products often have to have any branding removed for this reason, which of course then devalues them in the market.
Of course removing the branding also protects the brands value, no designer wants people to know that their garments can be purchased at such low rates.
In regards to first buying these products for yourself, then reselling later. There is absolutely no issues selling these types of products second hand, it's only selling new where you have to watch where you step.