I used to use Degrandchamps as my source until I realized I couldn't make any real money sizing up blueberries in my nursery. The stock was good, competitively priced with excellent selection. The 2-year plants came with roots in sand and peat mix so they were quicker to establish than bare-root plants. But shipping was much cheaper back then. Not sure that extra weight would be worth the benefit now.
[NAFEX] Degrandchamps Blueberries,
Alan Haigh, 02/24/2010