what a load of pants!! bought one as got loads paintin to do, found it easier to use a brush!!! i tried diferent amounts paint etc still no good

dont waste ya dosh fella's

LOL I thought about buying one of those.

Have you seen the roller which you fill with paint, about £30 IIRC, no tray to clean. The paint they used was very thin I assume you will need to thin ordinary emulsion for it to work.