The local hardware store sells what is labled "Greek Oregano". We planted some and it smells just like my bottle of wild oregano oil. It's hot when you eat it, too, like the oil is. So you might want to grab a pack of seeds before big pharma notices.
The package of oregano I bought in the spice aisle smells and tastes nothing like it. It's just floral scented and not spicey at all.