Much obliged. I'd love to hear what your search reveals.
As previously stated, WCS seems to be the best deal so far unless you deal directly with the ebay vendor to avoid the ebay fee.
FYI:
detailsformen.com sells 30@$5.25 + $5.95 shipping (same shipping at 90 or 120)
derazorblades.com sells 100@$15 + $5.00 shipping.
All of the above except for ebay shows (but who knows what ships) the old design packaging.