Some vendors advertise flatpricing schemes, but when a customer is big enough, a volume-discount deal inevitably creeps in.
有些供应商宣传其扁平化的价格体系，但是在其客户足够大的时候，批量折扣还是不可避免的。
2
They have also been granted the freedom to experiment with different pricing models-in other words, start charging by the Megabyte instead of offering a flat rate.
它们还被授权可以尝试不同的收费模式——换句话说，开始按照流量收费而不是按一个统一的标准收费。
3
Flat rate pricing structure with additional payments based on achieving specified outcomes. Appropriate for enhancement and transformational sourcing.