I've just bought a Rolleicord Vb and i'm itching to get some 120 film to get going. I went online and braced myself for the (expected) price increase for 120 film compared to 35mm. To my suprise its cheaper to buy 120 than a 24exp 35mm. Why? For example: Ilford FP4 PLUS for a 120 roll costs £1.99 Ilford FP4 PLUS for a 35mm (24 exp) roll costs £2.69 Am i making a school boy error here???!!! There is actually more film in a roll of 120 isnt there?