During Checkout, apply coupon "FRIEND" or "FNFMOB" which marks it down by 25% to $150. State taxes wherever applicable.
Shipping is FREE (3-6 business days)
Can use ShopDiscover because there is 10% CB on Macy's, however the fine print says cannot be combined with other offers outside of ShopDiscover, so I am not sure. If it does work, then the deal would be better.
Other G-Shock models as well as many other watches seem to have these 25% coupons working at checkout, so there are plenty of choices.
Other G-Shock Models at Macy's