Oscilloscope probes are sold separately due to the many varying applications/many people already owning probes. You can view the available probes online at: http://accessories.picotech.com/oscilloscope_probes.html
You can however purchase all of the PS3000 series oscilloscopes in a kit form which can be viewed online at:
In each kit you get the desired PicoScope oscilloscope, 1 probe for every channel the scope has and also a very useful carrying case. To top this off all of these kits have discounted prices saving you up to 20% off of purchasing the items separately.
Crag Technologies, Inc