At macromass the $150 (potentially 120 w/coupon) shipping is, I believe, them sending it out of pakistan into the UK, then being resent via royal mail. Making it a much safer shipment (and longterm, probably worth the extra cost)
400 1mg PD with the royal mail shipping would be about $280. Shaz would be about $480, both the same (I assume) product, shipping from the UK. Although Shaz may end up being a day or 2 quicker? I don't know.