Welcome to the site, I hope you do great from advertising here.
If you can get Wesssex Brigade Campaign Dark Flake in quantity, I can assure you that you could sell a couple hundred tins a month here.
Also if you can get your hands on John Aylesbury Luxury Flake, I would buy 75 tins in one shot. Another blend that would sell well is Rotary Navy Cut, not many people know about it but it is my favorite rum topped flake. If you can imagine Dunhill Flake with a rum topping that is what Rotary tastes like. Once the guys here try it the word would go out far and wide and you would sell quite a bit.