Hummel figurines were once highly collectible and so popular that the market became glutted. Also, these cute, sentimental figurines appealed to an older generation, a large group who are downsizing or dying off. Younger people are not interested in Hummels. The value has plummeted.
However, there are certain figurines that are still quite valuable. Value depends on condition, size (some sizes are in greater demand), and if you have the original box. "Adventure Bound" # 347 can command nearly $1,000.00. Other figurines still in demand are
"Heavenly Angel" #21
"Apple Tree Boy" # 142
"Apple Tree Girl" #141
"Ring Around the Rosie" (7" tall)
"Stormy Weather" #71, and a few others including special editions.
Look for current price guides online. Check the date on the price guide as older ones will not reflect current prices. Look for prices on Replacements as well.
You can sell your Hummel figurines through a dealer or consignment shop that specializes in collectibles, or an online site like Ruby Lane.