If you are looking to get maximum fruit and save most money, grow raspberries. They cost a fortune in the shops and of course are not freshly picked.
Growing your own is very easy: they can be grown against a fence in any sunny spot, they need minimum maintenance and they produce lovely fruit. 10 canes will yield up to 7-10kg..Lovely eaten freshly picked with cream

Careful choice will give a range of fruiting times from July to October. And of course they freeze easily and raspberry jam is very easy to make and takes 30 minutes. (even I - a mere man - can make raspberry jam:-).