I too think that Dry Run has set his prices pretty competitivley. When you factor in the service costs of the trailer, parking tickets for the car and trailer,costs for using a slip, costs of towing the trailer (possibly £10/100 miles), not having to anti-foul and not having to spend fuel getting to the Solent playground and the convenience factor.
And to give a more balanced view: Obviously one negative would be the increase in price when you fill the RIB up with Barge fuel as opposed to Garage forcourt fuel.
Looks Slow but is Fast
Member of the ebay Blue RIB cover club.