Mine came to about £68 this year, i also order from moles as i have found them to be far more reliable and better value than a lot of other places. I usually end up with more seeds than i need but any i don't use i give to my friend. Plus when it comes to the tomato's and peppers i tend to sow all of them and grow them on (often ending up with just shy of a 100 or so plants each) take the ones i need for myself (usually around 30 odd), give some to friends, and then what ever i have left over i sell to people at work at cost. So if the seed packet cost £3.40 and i get say 100 of them to the potting on stage, i take 30, my friends take another 20 thats 50 left, I divide the cost of the seed packet by the number of plants, thus 340p/50 = 6.8p (so call it 7p) i then add on about 10p for the cost of the pot, so 17p a plant. (though if they give the pot back intact i give them their 10p back),. Thus the seeds pay for them selves.
it only works for things like tom, and peppers though. So it might seem like a lot to start with but by the end of the year the cost has actually come down a bit.
last year i started recording what i spent on the plot against what the cost of veg/fruit would have cost if i had to buy it from the super market.
last year the total cost was about £190, (about £90 on seeds/set/spuds, £70 on rent, £30 on odds and ends) i gave up recording the vegetables after i reached around £210 mark in July.