Price discrimination online

Most of you students are pretty 'switched on' in terms of what we old people still marvel at; the Internet. You have never lived in a world without internet - which is pretty much what my dad said (he was born in 1928) to me about TV. No, relax, this is not going to be some sort of rant about taking things for granted or any sentence starting with "...young people today..." I am a big fan of technology and ...