compare

I compare two products.

私は二つの商品を比べます

I compare two products before buying.

私は購入前に二つの商品を比べます

I compare two products at the department store before buying.

私は購入前に百貨店で二つの商品を比べます

I compare two products with my brother at the department store before buying.

私は購入前に百貨店で弟と二つの商品を比べます

I compare two products by their prices with my brother at the department store before buying.

私は購入前に百貨店で弟と価格を見ながら二つの商品を比べます