Can thoroughly recommend Piper. Somehow my stuff always manages to arrive the next day even if I order it at the last minute!
Personally I paint bodies. I haven't quite had the guts to try dying just yet, and I'm putting an air brush on my christmas list.
Rerooting is surprisingly simple, just time consuming. I started off using a needle and dental floss but these days I use a tool which is quicker and better for rehairing awkward areas.. like backs and feet.
