There are two grocery stores nearby my house  where I usually buy food. One is cheaper and is located closer, the second one is more expensive and a little further than the first one. But I like more the second one although the first one has some advantages. The point is that the second one has more choice of groceries and it  has  higher quality. I buy  bread, groats, macaroni from the first one and  from the second one I buy perishable goods, fruits and meat. I think it's clear why I do this way.

Two stores

There are two grocery stores near my home where I usually buy food. One is cheaper and is closer to my house, and the second is more expensive and a little farther than the first. Even though the first is better in some ways, I like the second more, because the second has more choices and the food is of higher quality. I  usually buy bread, groats, and macaroni in the first, while I usually buy perishable goods, fruits and meat in the second. 

Your last sentence "I think it's clearly why I do in that way" is incorrect, but I don't really know what it means in the context of the rest of the paragraph. Gramatically, "I think it's clear why I do it that way" is correct, but I'm still not sure what this sentence really has to do with the rest of the paragraph or why it is needed.