Is anyone in need of lots of DUPLO to build supports for larger structures? I used a bunch of DUPLO bricks in making the supports for my yellow castle, then I covered the DUPLO parts with LEGO parts in varying shades of gray.
It seems like 10 cents each is a good price for 2×2 and 2×4 DUPLO bricks. Keep in mind that each one takes up 8 times the volume of a LEGO brick with the same number of studs.
For example, the seller of this auction might be willing to accept a package deal on all three of their DUPLO auctions:
http://www.ebay.com/itm/LEGO-DUPLO-LOT-HUGE-212-PIECES-of-BRICKS-BLOCKS-/321344109610?pt=Building_Toys_US&hash=item4ad199fc2a