The agency pays PreeChina a ground service fee of USD 100 per person for trips of up to 10 days and USD 150 for trips of 11 to 20 days, quoted individually beyond that, and set out for each group before anything is booked. Any savings depend on the itinerary, supplier availability, group size and confirmed rates, and are not guaranteed: see how the fee works. The hotels, meals, transport and tickets are supplier costs, listed as separate lines in the priced itinerary at the suppliers' prices, so the agency can see all the costs before it quotes its own client. PreeChina adds nothing to those prices and takes no commission from the suppliers. How PreeChina charges sets out the rest.
A 30% deposit of the ground service fee holds the dates. Items that must be booked in advance are paid in advance, for the amount actually booked. The 70% balance is paid within two days after arrival in China. PreeChina charges no handling fee for paying suppliers on the group's behalf.