-- Definitely VERY YMMV -- Select Home Depot stores have 25 lb buckets of Deckmate screws on Clearance for $27.02 from retail tagged at $105. HD website says products not found although some very limited stock may be available when visiting B&M. SKU's, UPC's & Model info is below. HD must have zero'd out the inventory even in stores that still have stock. Their website shows as not found even at locations where I found them. Brickseek shows no results either. There are definitely some out there if you can find them in store.
Deckmate #9 - 3 in. star drive deck screw - Tan - 25lb /
Deckmate #9 - 3 in. star drive deck screw - Green - 25lb /
Deckmate #9 - 2 1/2 in. star drive deck screw - Tan - 25lb /
Also included in the clearance: - (thanks tomwil)
Deckmate #9 - 2 1/2 in. star drive deck screw - Green - 25lb / $105 - $27.02
Looks like they discontinued the 25lb size some time ago and now its getting down to the last few units left. In Columbus, Ohio the first location only had one left, but second location I visited had 8-10 still available. Some product may be in lumber or Pro's area instead of regular hardware isle. Searching the model number on HD may give you the product images and specs, however it will show the largest size available as the 10 lb box.