I was on the budget topic board and someone posted this website:
http://californiaflowergrowers.com/index.phpI checked into their prices for the flowers I intended to order from Costco... they are cheaper on the baby's breath, hydrangeas, and have stephanotis, gardenias, Queen Ann's lace, and white orchids, which Costco doesn't offer. They are more on the roses and oriental lillies, and comparable on the calla lillies, a bit cheaper, but Costco doesn't charge for shipping, so I figured it's a wash.
Just thought I'd pass it along.