1.这两个都指不含税,看你适合用哪个
tax-free price 免税价格（商品价格不会再加税,是免税商品）
pre-tax price 税前价格
2.net price (净价就是纯价格)
3.fob price
4.Above prices are for minimum of 1000 units
5.we need samples of these three types of product.