Amazon takes ownership of Whole Food on Monday and it has promised to lower prices as soon as it is in charge, according to Bloomberg News. Whether it can do so in a way that makes an immediate difference in the amount of business done by a store like the one at 1860 Bayview Ave. is an open question. Analysts have pointed out that lower prices won’t lower the rent or fixed costs. But it will be another margin-squeezing element on the tight Toronto grocery scene.