Seiko Watches Latest Seiko Dive Watches, Seiko Automatic, Seiko Gown Watches The Grand Seiko SBGA229 will set you back a quantity of thousand dollars less than the Submariner. However, while the Submariner is currently commanding considerably greater than its original retail worth on the secondary market, the SBGA229 is holding regular at or simply below retail when purchased pre-owned. If you’re lucky sufficient to put money into the Submariner at retail, it is positioned as a better investment than reference SBGA229. However, except you plan on spending several years on a ready listing, you will probably end up paying almost twice the value of the Grand Seiko should you wish to add the Rolex Submariner LN to your collection.