As Anthony says, it's single action so not the greatest. Still, having had one myself when starting out, it's better than a paintbrush! So for less than 70 bongs for someone starting out this is a great little job.
I particularly like the desktop compressor. Firstly, it beats freezing the ass off yerself outside in a cold shed with a 100dB compressor roaring in your ear every 5 minutes. Secondly, being able to paint at room temperature means quicker evaporation particularly if using acrylics and surgical spirits as a spray medium.
Thirdly, the selection of valve adapters is well handy, having had to purchase ones for my Iwata in the past on line...
I see myself calling to Lidl this evening.