Look at it this way, for $48.00 you can make 4 real nice grape skin packs, I destem and crush the grapes, then I put them in the large muslin bags used for making beer, once it is tied off, I place one in my juice bucket and start fermenting normally.
There is nothing quite like using the fresh grapes, plus, it is much more cost effective than buying a few grape skin packs.
On a side note, the "AllGrape" packs that M&M carries are just under 9 lbs of crushed grapes and juice.