For sale are three used filters. They have normal signs of wear, but clean glass. All are 49mm:

TIffen 49mm ND.9
Hoya 49mm Infrared (R72)
Hoya 49mm PL

All were purchased new, but I've switched from Pentax and have had to buy 52mm filters.

$25 shipped via USPS first class mail to any United States address. Payment by Paypal. No international shipments please.