I have a JVB rear brake reservoir still for sale.
It's brand new absolutely mint with all the boxes/bits needed to fit on an XSR700.
I took it from plastic packaging and held it up to bike, took pics for forum, decided on the rizoma and placed back in box.
Pics and Installation instructions are on the following thread
In total it cost me £97.28. (Reservoir cost, bank foreign transaction fee, postage to UK and euro exchange rate)
Tracked postage within UK is £5 (MyHermes)
For those interested I would accept £75 and i'll pay for postage.
PayPal transfer to me and I'll post to you.
Please PM if interested and/or happy to discuss via phone if worried re transfer.