There is, I'm afraid, so much I would query in this example that I didn't know where to start - just put the example up.
However ... you folks have started for me
so I can carry on ...
a) Frequency of services - wrong
b) Implication of ticket split being need on pricing - wrong
c) Overall journey time - wrong (well - not allowing for changes / waits)
d) Are there really 25 places to stay ("Accommodations") in Kemble?
e) Drive cost looks very low
f) Taxi cost looks rather high
g) Bus routing rather interesting ... and again I think connection time missed
h) All pricing for single journeys only?
i) Drive times - you just might manage 32 minutes in an emergency in the middle of the night. Peak I would allow an hour.
Train time IS accurate for twice-daily each way through services; pricing RETURN is ^18.60 or ^13.00 off peak. Average journey time (each way) is around 75 minutes taking services offered by online booking / timetable engines.
We do have passengers who regularly commute Melksham to Kemble - although it's a dog-leg, it's not really silly if the services connect. And the through service that goes on to Cheltenham Spa is hugely useful for the Midlands and North. Indeed one of the TransWilts' looked at cases
was (past tense) linking at Swindon so that the 2-hourly Cheltenham to Swindon unit would carry on south via Westbury, using up much of its wait time at Swindon and providing a good route to the north from Chippenham, Melksham, and (in one scenario) Frome, Yeovil, Dorchester and Weymouth. (Trowbridge and Westbury too, but that would have abstracted 'via Bristol' traffic)