I sold mine on ebay two years ago (mint condition, case, tags, etc.) for £800. So with the crappy market at the minute I'd say Stonevibe's estimate of £650 is pretty close, unless it's pristine in which case maybe a touch more.
I have that mag. But.... They allegedly released some before then that had Brazilian boards. Story goes something like whilst he was still alive Stevie was designing the guitar with Fender and they made a load of necks up in the 'Custom Shop' and that it was going to be a more expensive instrument.
After his death it went the other way and they became 'Signature Series' and that some of those used the CS necks as they were to spec. There are whole websites dedicated to this.
I had a mid 90s one for years and it was a great guitar, resonant light etc etc
I payed £800 for one about 6 month back, have to say it is fucking sweet to play, would never sell mine, never played a strat with a better neck than what is on those, I have seen a few on Ebay, and they are still asking in the £800 + range, mine is a 2004 in mint condition like, not a scratch in site, and the case is mint too, I would advise you not to sell it for £650 on principle, but it will sell at £650 fast I reckon, just keep it mate, I don't reckon fender have a better playing strat for the money, those necks are stellar, i still struggle to put mine down 6 month on, I really dig the lefty trem too, going from that strat to my others makes the others seem, well not as nice to be blunt, the flat board is addictive & what makes it harder for me is i am looking at mine as I type lol, always picking it up acoustically
I notced 9s don't sound as good on these guitars, you have to at least put 10s on, it seems to liven the guitar right up and make the pickups sing more, I have the pickups low-ish in this guitar also, as it chimes more, just a thought, what is the reason for sale ?