You're quite right, I missed that, sorry, what a clown! What has changed, apart from the prices, is that the Feltham station area has been remodelled. Bus stop C, at the front of the main, London-bound station building, is no longer there following the closure of the level crossing. Bus stops are now on Hounslow Road (the A244) at the opposite end of the station, but there is a new step-free access route to the London-bound platform with a ticket machine so you don't have to walk all the way to the ticket office.

And it's a double-whammy of errors for me, I've quoted the anytime day single fare for a paper ticket but it's actually far cheaper to use contactless payment, have added this in above.