With my new Note 7, it comes with either a memory card or a wrist sports watch. I'm thinking of take the watch and buying a memory card elsewhere. Samsung says the memory card (256gb) is worth about $250, but I see other cards for $100 or less.
You are correct on the allowable limit for a MicroSD card.. and if one was to search Amazon for a microSD card they would find a wide range of cards listed and at various prices.. However, one must consider the card's speed class rating in order to locate a good deal..MEMORY Card slot microSD, up to 256 GB (dedicated slot) - single-SIM model
microSD, up to 256 GB (uses SIM 2 slot) - dual-SIM model
Internal 64 GB, 4 GB RAM