A few from my personal collection up for grabs:

900G Hook Hybrid - $20 + ship
Bought this ball last year.  Threw it maybe 5 games.  Moved the thumb a bit to shorten span...  Haven't thrown it at all this year.  Span is approximately 4 3/8"  Ball is marked as an X because starting top was a little less than 2 oz
http://i1012.photobucket.com/albums/af243/sberkhous/Hook_zps452ee27d.jpg
http://i1012.photobucket.com/albums/af243/sberkhous/Hook2_zpsbf94c8a1.jpg

900G Wisdom Gold/Black - $25 + ship
Bought ball used, moved the thumb a bit to adjust span.  Ball hooks a lot more than expected.  I've thrown it a few weeks in league..cover is in great shape.  Span is approximately 4 3/8"
http://i1012.photobucket.com/albums/af243/sberkhous/Wisdom_zpseb8320f4.jpg
http://i1012.photobucket.com/albums/af243/sberkhous/Wisdom3_zps3ad97718.jpg

Radical Slant Pearl - $50 + shipping
Drilled this ball about a month ago.  Have thrown it a couple games total through out several weeks in leagues.  Nice ball with strong reaction.  I just don't really throw it much.  Span is approximately 4 3/8"
http://i1012.photobucket.com/albums/af243/sberkhous/Slant_zpsdeac70b8.jpg
http://i1012.photobucket.com/albums/af243/sberkhous/Slant2_zpsc551c711.jpg

NeoTac Khameleon - $80 + ship
Drilled it up about 5 years ago (last one from my stash of 6!).  Never threw it as I was "saving" it.  Now I've adjusted spans/pitches and can't bring myself to plug/redrill this one.  I have the original box.  Cover is in excellent condition, ball has low games.  Span is approximately 4 1/4"
http://i1012.photobucket.com/albums/af243/sberkhous/Khameleon_zps3e8e904e.jpg
http://i1012.photobucket.com/albums/af243/sberkhous/Khameleon3_zpsfe6090f5.jpg
http://i1012.photobucket.com/albums/af243/sberkhous/Khameleon2_zpsfa13f5ca.jpg