# Compare quotations on the same basis

Lesson 2 of [Specify and buy kitchen exhaust cleaning](https://greasecleaning.fyi/academy/specify-and-buy-exhaust-cleaning.md), 10 minutes.

Comparing quotations is easier when the underlying work is comparable. A price without an agreed scope tells you little about which system parts will receive attention. This lesson gives you a practical way to compare offers without inventing a market price, ranking businesses, or treating the cheap…

The rest of this lesson is for learners enrolled in the course. [See how Specify and buy kitchen exhaust cleaning works](https://greasecleaning.fyi/academy/specify-and-buy-exhaust-cleaning.md).

Also on the [web page](https://greasecleaning.fyi/academy/specify-and-buy-exhaust-cleaning/compare-cleaning-quotes).