Do you actually want the falcon? Sounds like it was more presented to you than something you want. My advice is never buy or trade for something unless you really want it, and don't do it for investment (that's what a 401k is for), or you are absolutely certain you can flip for profit (including all the time you waste doing it). How Confident are you that you can actually fetch that much for the bass? Price ranges for obscure models are not that useful imo - rare isn't a good thing if it is so rare no one is trying to buy one. The top price may require listing it for a looong time. Honestly, if you can't afford a $3000 guitar you actually want, then you can't afford a $3000 bass you don't want. I would list the bass now. If you do want the falcon, do a trade. See if you can get some cash or other trades with it. Just my 2 cents.