Maybe it's just me, but better items at auction always seem to fetch stronger prices than retail or online like
ebay. Part of it is the clientele that is drawn to auction (more serious collectors with money) and part of it is the emotional element which results in higher prices being paid. I can't say whether this is unusual but I suspect it is pretty normal.
If you have better items ie. more than a few hundred $ I would consider consigning them with a reputable auction house vs selling on
ebay etc. where well below catalogue is expected and typical.