most economical range

例句：

1. 1. The most economical range of options is to buy a new laptop.
   最经济的选择是购买一台新的笔记本电脑。
2. 2. The most economical range of prices for this product is $50.
   该产品的最经济价格范围为50美元。
3. 3. The most economical range of options available is between $500 and $1,000.
   可供选择的最经济选项的价格范围在500到1000美元之间。