配额市场 meaning in Chinese

allocation market

The quota price is already the lowest we could find in market . these orders are ready to ship many weeks ago , please double review and confirm the price urgently . then we will purchase quota and arrange booking . thanks
以上是我与客人的邮件沟通,我现在真是不知道怎么跟客人解释才好,我除了说配额市场波动大不能确定什么时候低价以外我还要怎么解释才更有力度呢. .望大家帮手出出主意.谢谢了