I sell Patchwork cutter in my shop and use them quite often. If you go to the Patchwork site they do have a list of suppliers and you might find one in your area.
www.patchworkcutters.co.uk
Please note that many Patchwork cutters are not for use with fondant, and that could be the reason why people dislike the cutters. They're simply using them the wrong way. Patchwork recommend Mexican paste, and many of the instructions with the cutters include a recipe for Mexican paste.