That's so exciting you're considering Lancaster! Every Lancaster student will say their own college is the best! However if it is the cheapest accommodation you are looking at then the colleges with the cheapest accommodation - £129.71 per week are Bowland, Furness, Grizedale and Pendle, all shared facilities. All this information can be found on the Lancaster University accommodation website for more information!
Don't hesitate to ask if you have anymore questions,
Lucy (Lancaster University Student Ambassador)