£1.39 per pack here http://www.seedparade.co.uk/products/Tomato_Shirley_F1_5_seeds-88-1.html?gclid=CKC_y6PAj70CFasEwwodp5YA4Q although it doesn't say how many seeds the pack contains and the company certainly doesn't have any sort of quality reputation as far as I'm aware.
I think we have to remember that many of the larger companies invest a lot of money on the development of new varieties etc, rather than just growing and selling seeds - they have to cover that investment.
They also produce and sell a wide variety of seeds, some of which may not be as popular as others and therefore may not recoup their costs, so in order to maintain a wide choice for the grower they spread this across their whole range.
I hold no brief for seed companies, but I feel that to label a company as profiteering without evidence of their costs might be a little naive.
There's much more to producing seeds on the scale done by the large companies than growing some tomatoes and saving and packaging the seeds - some varieties are licensed and fees have to be paid, and quality control measures also cost money.
How's the damp problem in your shed Chris?