Our mid-atlantic gardening friends have been banding together for "local pick-up" group buys, often (when we can) in conjunction with one of our plant or seed swap parties. I highly recommend ADR Bulbs... they make a point of supporting garden clubs and similar groups. While you can get even better prices on crates of daffodils etc., they also have most things in smaller boxes (75 daffodils, 150 muscari, 50 oriental hyacinths... just to give you an idea of their per-box amounts). Even if you have just a few people who like planting in sweeps of color and are willing to order 25 of one variety rather than 5 at a time, you can make a go of a group buy from them. Their minimum order is only $300, which also helps. Just email them, tell them what you're trying to do, and they'll give you a log-in (otherwise you can't access prices or place an online order).
You can look in this forum for threads from past group buys I've organized. This year, we did a quick early by-the-box purchase, and I was surprised there wasn't more interest in a later offer to order bags/boxes to split up... but I've found our bulb buys, particularly, go in cycles. Next year might be another delivery via shipping pallet.
I wrote an article on doing group buys and a pair of how-to articles detailing the way we do our bulb buys. It's SO SO much easier to organize a group purchase that doesn't require products to be re-shipped, so ask around your local garden friends and see what you can do!
