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In theory they are priced the same. Same movement, same spec. The SBDC065 costs more because it’s a special edition and comes with both the bracelet and a (blue) silicone rubber strap.
There is a black dial + blue bezel version of the Marinemaster style which is cheaper:
Normally it comes on rubber, Gnomon offer it pre-swapped onto the bracelet. Gnomon are where I got my SPB053 bracelet from and my SBDC065, I recommend them highly.
No worries, forgot to mention that’s the Japanese market reference. UK / RoW ref is SPB083J1.
Actually, don’t know if maybe you’re thinking of the one I used to own, the SBDC053 / SPB053J1? That comes on rubber as standard but I ordered the bracelet for it.