I'm looking for down to make a winter DIY down top quilt, and I see that thru-hiker is now selling 800 fill activ-dri down by the ounce.

Anyone know of other water-repellent/hydrophobic down that is available for us DIYers, or is this the only source? I would like to compare prices, and find out if anyone offers down pre-packaged into smaller quantities, since that was really helpful when I bought down from Wilderness Logics when I made my summer quilt.