Not fair they don't do any of the GI3-S coloured balls as cheap or cheaper than the white ones. Same applies to the GI2-S balls too.
I'm guessing they are making it similar to real golf; the best Titleist, Nike, Callaway, etc, etc spin balls are pretty much always white. Distance balls or cheaper balls can be found in yellow, orange and pink to name a few (may even be all!). Have you ever seen a yellow Pro V1??? And I bet real coloured balls don't cost any more than similar white ones... may even be cheaper!
So WGT, how about not being so greedy and make all colour balls the same price for the same type. I too would like to play with a different colour, but I'll be damned if I'm going to pay extra for them!
Oh, and one more thing, get some pink woolly knickers for Lizzie; she's been hinting, nay begging, for absolutely ages!