Anyone know of a source for bulk hawthorn tea or tea bags?

Hawthorn tea is supposedly helpful in regulating and lowering blood pressure. It also tastes pretty good. But locally it’s about $3.50 for a box with 20 tea bags. That’s $0.175 per cup, which isn’t horrible. But I’d rather buy a large container of it that box after box. Is there a tea company somewhere I can order the prepared tea from? I found whole or ground berries. Is it just dried powdered berries in the tea bags?