Open Question: Any Classical Music CD Appraisal/Sell Sites?

I was just given 3 huge boxes full of classical music cd's. About 1/3 of them are not even open. Some of them are sets of 2 to 10 cd's. Does anybody know of any sites where I could look up how much their worth? Or of anywhere I could sell them other than ebay & craigslist? Thanks! Just got these last night & have just started looking through them. I'll compile a list & add more details in a couple hours. BACH J.S. Bach Brandenburg Concertos Nos. 1-6 Tafelmusik Jeanne Lamon Sony Classical 3 CD Bach: St. Matthew Passion, BWV 244 Göonnenwein Musical Heritage Society Bach Keyboard Concertos Infinity Digital Bach's Adagios 27 Tranquil Tracks From The Master Of Baroque Erato Bach: The 6 Trio Sonatas BWV 525-530 Fisk/Fuller MusicMasters Classics J.S. Bach Orchestral Suites Nos. 1, 3 & 4 Bath Festival Orchestra Yehudi Menuhin Seraphim Classics Kennedy Plays Bach With The Berlin Philharmonic EMI Classics Bach: The Six Suites For Solo Lioloncello, BWV 1007-1012 Nikolaus Harnoncourt Originally issued by the Musical Heritage Society in 1965 as LP # OR B-272/3/4 Musical Heritage Society Archive Series BEETHOVEN Ludwig Van Beethoven Violin Concerto Romance For Violin And Orchestra 1 & 2 Emperor Beethoven . Mass In C Major - Richter Mozart . "Coronation" Mass - Markevitch Privilege Beethoven: Piano Sonatas, Op. 2, Nos. 1, 2 & 3 Murray Perahia Sony Classical BOISMORTIER Joseph Bodin De Boismortier Music For 1-4 Flutes Miller/Burman-Hall with the Santa Cruz Baroque Festival Ensemble Musical Heritage Society BRAHMS Johannes Brahms Symphonies Nos. 1 & 2 Neville Marriner Academy of St. Martin In The Fields Hänssler Classic MOZART An Evening With Mozart - 10 CD box set - still in plastic Mozart: Serenade No. 10 "Gran Partita" 8.550060 Mozart: Horn Concertos Nos. 1 - 4 8.550148 Mozart: Concerto for Flute, Harp & Orch . Sinfonia Concertante 8.550159 Mozart: Piano Concertos Nos. 20 & 13 8.550201 Mozart: Piano Concertos Nos. 21 "Elvira Madigan", 12 and 14 8.550202 Mozart: Piano Concertos Nos. 9 and 27 8.550203 Mozart: Piano Concertos Nos. 17 and 18 8.550205 Mozart: Piano Concertos Nos. 11 & 22 8.550206 Mozart: German Dances 8.550412 Mozart: Violin Concertos Nos. 1 & 2 8.550414 NAXOS