There doesn't seem to be anything in there that can't be achieved for less money with dextrose and CaraPils.
My experience with Munton's Carbtabs, which seem to be pretty much the same thing, has been pretty negative: Slow carbonation and lots of floaties in the beer.
The Fiesty(sic) Goat Brewery est. 2007 & Clusterfuggle Experimental Ales est. 2009
Planned: Farmhouse Saison hopbursted w/ Nelson & Galaxy, sLambic II, Flanders Red, Orange Blossom Mead
Primary: Karneval Kölsch 9.0, FonBrew Brown Ale (brewed in Fondue pot), sLambic I
Secondary: Winexpert Riesling Ice Wine, Flanders Red
Kegged:Black or Blue EyePA
2013 dump volume: ~2 gallons