The queries about schema.org use an example found in file Plush.ttl about a now-defunct small business called Plush Beauty Bar. The data in this example is completely fictitious; any resemblance to real offers by any company are purely coincindental.
In schema.org, a Good or Service doesn't have a price; there is an offer to provide that Good or Service for a price, which has a currency and a value. This query finds the ones that are less than $100.
Query ch10.1 Services under $100 
