Why buy 10 oz silver bars? It's easy to stack. Requires much less space. No problem selling if stamped with purity and metal weight. Some bars (engelhard, kitkat, wall street mint, JM, Hereaus) carry more prmium than others. NWTM, Apmex, Amark, Monarch, and others are readily identifiable, and easy to sell if need be. Bars larger than this can be bought for less to spot, but are not as easy to unload. Any dealer will buy them from you, but at a cheaper price.