Personally i'd advise you to avoid it at all costs...
I got one from B&Q thought it would be a great way of doing my room when I was redecorating!
I got it home to my room where i'd filled the holes with polyfilla and sanded them all down perfectly lots of work on the wall prep... furniture of the room emptied (thank god) and I get the Paint Pod ready to fire up.
I followed the instructions perfectly filling it with the silly little cup thing...
Turn it on and WOOSH out comes a load of paint even though im not pressing the trigger, luckily this was my old carpet. So I figured it was faulty, I take it back, get a replacement...
Follow the instructions again and WOOSH a repeat of the first one... "WHAT THE
"
This time I made sure it blasted its load all over the wall.
Get some paint pads, nice quick easy job with them.
The PaintPod is just an absolute shambles, messy, noisy, doesn't work as you want it to and just too much hard work.
Shoulda known it'd fail after the stupid fence sprayer thing my Dad got... but noooo I didn't think.