I own a lot of HH pieces because I love their quality and they don't come with a hefty price tag (most of them). Also really like that their apparels are self manufactured so you get more unique designs. Would recommend HH for basics, they have a pretty good line of comfortable basic wear.
One thing that could be improved is their customer service. Correspondences with them always seem transactional and curt. Don't be surprised if you get one word replies.
Shipping is a flat rate of $1.50 for normal mail, so it makes economical sense for you to buy many items at one go, or combine with friends.