Is this for real... I found a Jaco relic Fender jazz bass on sale for a little over $5000 in my area. Its very worn, looks like its been modified and parts removed, added, drilled into, etc. Its in pretty bad shape. Seriously...think its just a 'replica', is it too good to be true and does Jaco sell off his basses (where they end up on the regular wall of GCs)?