The PicoScope 2205 and 2205A oscilloscope hardware is the same, however the 2205A variant is only available to academic organisations (schools, colleges and universities). I believe the differences you observed in the specifications are printing errors. Refer to our website for the correct specification.
Why such a large price difference?
The 2205A contains a pair of 60MHz probes to form a kit, and is priced accordingly with an education discount. The 2205A is exclusively available through Allied Electronics.
Does the 2205A support PicoScope 6 and get full support + 5Year warranty?
Correct, the 2205A is fully support in PicoScope 6 and includes 5 year warranty.