Bought directly from them before. But that was some time ago. Their phone and address is somewhere on this forum. They will tell you what style and size they have in stock with a price. Go through their catalog and figure out what you want. Worked out for me.
Can't comment on H&K for US mail orders.IME, it depends. Sometimes some stores give you a partial VAT deduction. Others give you a full deduction. You should call and ask to confirm. UK was raised to 20% last year.