How much is a Pentax P30 camera with lens, plus zoom lens and flash worth?

I have one plus 3 Takumar lenses. They are pretty much without value, regardless of being in pristine condition. You (and I) could make a photography student VERY happy by giving them this equipment. Or - maybe sell the camera for $25-50 or the whole lot for $100.

About a quid

try putting it on e-bay

SLR's are not worth that much nowadays due to the digital era unless you get into the realms of the top Nikons (F1/F3 their Bomb proof). I have a Minolta 7000 (along with two digital cameras) which i'm going to hold on to because I won't get that much for it ! It will always do for a back-up camera !!!