Help identify the author's picture and an approximate price
 

Help identify the author of this picture: shy:

There is such a site www.findartinfo.com
There you can enter in the search for the name of the artist. After all, the picture on your signature is easy to read. Pay the site itself, but the search can be done free of charge. Search provides the following:

János Vazary (1,867 - in 1939) Hungary
János Végvári I (1927 -)
János Veress (1900 -)
János Villányi (-) Hungary

Following "Janossy" has no accent on the a:
Janos Viski (1891 - 1987) Hungary
Janos Valentiny (1842 - in 1902) Hungary
Janos Vastagh (1821 - 1870) Austria
Janos Vaszary (1,867 - in 1939) Hungary

And then try to type into Google the name and surname of each and find their pictures and signatures, and then compare with yours. If you find an artist, then in the same Google look for his paintings at various auctions (at least for eBay'e), so you can learn and level of prices. Good Luck!

But perhaps someone from forumchan and immediately give the correct answer.