Parker, have you checked out the 'links' button up there in the menu bar? Click on that, and you'll find links to vendors that are Den members, sorted by rough geography (N. America, Europe, Australia). Those are reputable vendors with good customer service. Trying them out isn't as risky as some other places you'll stumble across through a web search.
For tobacco-based flavors, I'd suggest you start with Innevape and Vaping Xtreme.