The set consists of two sets DS-START-05 and is provided at a better price.
The set includes 6 IQRF transceivers (TR-72GAT) that you can use for basic testing of your application. One option is to place 4 IQRF transceivers in the battery-powered DK-EVAL-04A kits and one in the CK-USB-04A device in the role of IQRF nodes and connect the sixth device to the computer using the CK-USB-04A programmer and send commands to the IQRF nodes via it. So you can easily verify the functionality of your application. In this way, the function and range of the IQRF mesh can be tested. Another option is to upload an example to the IQRF nodes for range testing and verify the signal throughput and range in your environment.
Many examples can be found in the IQRF IDE
You can find more information here
Tutorial for manufacturers - using development tools: