Seed price inflation!

I got a packet of Socrates from DT Brown for £1 last year in one of their sales. I rarely buy any seed full price except from Premier Seeds or other cheaper seed shops. Tomato and cucumber seeds are often very overpriced. Tomatoes is where I am more likely to spend money since I am interested in rare or new blight resistant varieties, which aren't always easy to find cheap. This year I sold over 100 tomato plants so made back any money I spent on seeds. Never would I spend £4.59 on 5 seeds though!