Why did this MJ auto sell for so much?

[agentjak]

Hey ya'll. Quick question about this MJ auto. The BV is only like $1000, but sold for $3,839. Any idea why? http://www.ebay.com/itm/350653883408?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

 

[lisu]

it seems like all the MJ autographs and inserts from older years are hitting 4 figures. There aren't any Bulls MJ autograph cards anymore since UD lost the license, and I think that is what is building up the demand.