Yep, it doesn't matter the source as long as they are legit.
You can even try your local stores and try to sell the products at a profit, something that comes from Mexico that other countries might like for example
Retail arbitrage is a fairly simple concept. A retail store (such as Walmart, Target, etc.) sells a product (either online or in-store) for a certain price. You purchase that product and sell it for a higher price yourself and pocket the profit.