I will never understand why local tobacco shops get these kind of things in stock.
lol well actually i do know why, my starter Envy super mini that i bought at a tobacco retailer was $40 (one bat, one atty and charger) and refill carts were $13 for 5, now i look back and go haha on me.
If brick and mortar stores would start handling 510s ( and all the rest we like around here) and sell liquid to refill them with analog people would be going crazy for this product.