I'm a buyer not a seller, but finally admitted to myself my Bravewood Jazz, built to my spec, was not the one for me. I added another two very nice basses - Pino Stingray and modified 62 Jazz, that I didn't pick up regularly and have turned the proceeds into a 65 Strat (heresy)
As others have said, if you don't play it, if you have tried strings/setup changes, take the hit and buy something that will ultimately give more satisfaction and consequently, more value.
Secondhand exotic basses can be bought for very attractive prices currently, so you should be able to buy something great without having to top up. Move on, you will feel better fo it.