I sometimes avoid value questions but I'm sitting here watching the news and bored. In my opinion, not as much as many ask. You did not specify but if we are talking a "standard" knife, EVERY 110 manufactured in 2014 was a 50th anniversary. That would be a zillion. No more than double what it sold at Walmart for...$30-$35 X 2, FG's a bit more. Now, you do realize there are variations? Two different tang stamps, one without the word BUCK and one with. Probably Dec-Mar for the first. Also, the first 2014 marked blades were released in Dec 2013 without the handle shield. There were other limited variations.
edit... I just did an eBay search for "Buck 110 50th" sold listings and got 59 hits. That might help.