It seems a bit pricey to me considering its missing tuners and electrics. I'd say you're looking at roughly an extra 30-40 pounds maybe a bit less for those bits plus then consider you may want to change the pups.
body doesnt look in particularly good nick either...
I'd reccomend doing a search around the for sale section for past mexican Fenders that have been sold recently for a good idea. perhaps put a post in the wanted area?
I vaguely remember seeing a working one that was a little tatty cosmetically go for around the 200 pound mark.
I have the same colour and looking at it, roughly same age mex jazz. I changed the electronics and love it.
I'd say buy one thats complete and usable now and then start tinkering with it.