Buying Accent Pillow Inserts

I go through a lot of accent pillow inserts each year - including them on almost all pieces of furniture.   As with all aspects of my refurbishing process (to be able to provide a good price/value to clients), I look for the best deals.  I am currently using two primary sources:

1. Ikea stores sell 20" square 90% feather - 10% down inserts as well as comparable sized lumbar pillows for $6.99.  This is by far the BEST price I have found anywhere and the construction is top-notch - my upholsterer loves them because they have tight broad seams and do not shed feathers as many do.  Unfortunately, they are not available online - Link to Ikea.
2. Goodwill stores (and sometimes garage sales) often sell gently used accent pillows with perfectly clean inserts for prices ranging from $2.19 to 5.79.  Before buying, I always unzip the cover and thoroughly check the insert.  As I've mentioned in my earlier Goodwill blog, Tuesdays are senior discount (25% off) days so that is when I scout 2-3 stores. This week's haul was 1 - 18",  2 - 20", and 2 - 24" inserts!!  

IF anyone has another source that provides these kinds of deals (or better), please share!