Surely this is going to result in a lowering of prices from HEx?! A 30 day advance fare Paddington - LHR is £12.20 plus my £2.40 to get down to Paddington, but Crossrail will be £2.50 cheaper as a walk-up fare and therefore only worth booking well in advance if you can get a £5.50, 90 day advance ticket. I never get the Connect as it is twice as long and I always book in advance so rarely cheaper, but I can only really see corporate types arriving at Paddington in a cab paying the £25ish walk on fare, everyone else would be getting a through-ticket from town? I would imagine that someone coming from town would be better of changing at LHR for T5 rather than Paddington although I suppose we will have to wait and see how the interchanges are at the various stations in terms of ease of navigating the system with luggage.