First, I've heard good things about the seasilver product itself. I have no personal knowledge thereof.
On product comparison sheets, sea silver and body blaance have about 120 ingredients. I don't believe they have vitamins, amino acids, a fiber blend, nor some of the other essential nutrients for the body.
Isn't cost is a relative term? Two things might cost the same but one have superior value. You might want to compare to the link below for more information.