I've got some duck stamps from the past few years back to '09-'10, they were never removed from the paper they came on to put on a license. Was wondering if they are worth anything, the ones I have are 2009-2010, 2010-2011, 2011-2012, 2013-2014, and 2017-2018.

Nope not really.

Just hold on to them and keep collecting. Get some sort of a notebook or binder to keep them in.

Probably can’t sell for what you paid.

Search "sold" auctions on ebay for the same stamps you have. You should be able to get your money back on the older ones provided they are mint condition on the original souvenir sheets and unsigned. Maybe even make a couple bucks. I can't think of any other avenue to get anything for them other than ebay.

In the 1980s from a one line personal advertisement in the back of a magazine like fur fish game or something I found someone who collected licenses and stamps. At the end of hunting seasons I dropped all my expired licenses and stamps in an envelope and mailed it to the address I had for them. A few days later I would get a letter back with a thank you note and a few dollars cash in it. I did this for many years and noticed the thank you note each year got harder and harder to read. The last time my letter got returned. They either passed on or moved on to another chapter in life I guess.