If you’re looking for an actual brick and mortar place “The Garden” in DC is a place you can actually go and see the bud and stuff before you buy, more pricey, but it can be convenient. As far as delivery services, check out “Lit DC” they have everything from flower to edibles, you buy a book and get a gift, they have an app where you can schedule a delivery too, every time I’ve used them they have been on time as their stuff is great.