£722?! Wow.... just wow...
I was quoted £100 from a breakers but ended up paying £45 on eBay. Condition wasnt too bad so id hold out and see what you can get. I have a Red '99 FZS600 and bought a silver tank, my solution was to get it wrapped by a place fairly local. Took a couple of hours (I removed the tank and drained the fuel before hand) and the finish is good, but colour match wasn't perfect - if thats not an issue, then awesome, if it is then try to find a decent reputable place and make sure that they can match the colour. Cost me another £50 but even then it was cheaper than the breakers all in.
Sorry I don't have a tank for you, but hopefully this might offer another opportunity...