Your railway looks very realistic. We celebrated Mallard's record run with a Hornby Live Steamer in 2013 around the garden with guests. It ended in disaster. If you click the logo on the left you can find the appropriate vid.
Is this noise by design or did something go wrong?! Also, calling it the Record Run but having the number 60022 is bizarre as when it made its run it was 4468
Would what cost? The train (loco and coaches, which comes with a simple loop of track when you buy it) - £250 I think The entire model railway - Looks to be maybe 3k if not more