i buy my lenses on line from a company based in the channel islands. approx 35 to 40 pounds for a 3 month supply ( i was paying 95 euro here). free p&p and delivery within a week. good customer service too. i have no vested interest in this company. murphys law says i don't have the name of the site to hand but you could google.. also lenscatalogue.co.uk is cheaper than what you'd pay here. i'll find the name of the one i use.
VHI are charging €80 for 6 months supply of [broken link removed]. I buy the same 6 months supply including delivery for €44.80 from yourlenses[broken link removed] - Very reliable crowd to deal with too.
I've just received my first order from Eyepassion - took 2 weeks (posted in Barcelona!) which is about the same time as VHI, but 20 euro cheaper for 3 months supply. I mistakenly ordered the wrong prescription online but they corrected it straight away. Very impressed and I'll be using them again. I used a US firm last time (Yourlenses) but they took 5 weeks to arrive and I had to pay duty so it cost about the same as Eyepassion in the end. Absolutely no connection with the company, I promise - just a happy customer.