obviously things will have changed but just over ten years ago my mum sold two printed photos one signed just by ringo and another signed by all the boys, she sold them at auction as we were desperate for money, they went for about 250 but after the agents fees etc she ended up with less than 100 quid! now she wishes shed held on to them.
sorry cant give u any help really but ur photo will be worth more now george has died and will be worth even more when paul goes, personally id hold onto it, its probably worth more sentimentally than anything else, but u never no in the future!