I think this is unfair. I don't know the inside story or what kind of incentives were offered but...
There's a list of engines attending South Cerney on my website:
http://www.internationalsteam.co.uk/...kindexsc18.htm
Most of the engines have been seen here or at Welland in the recent past.
The number of engines which came from the Shabbington 'catchment area' is actually quite small.
Arguably, based on where I have seen them, these include the Hazell engines, Foden Emily, the two C& S, the Marshall roller and Britannia, and Fowler 'My Delight'.
Of these the Hazell Sentinel has attended South Cerney in the past and I doubt Mr. Hazell is greatly in need of the money judging from the size of his collection.
It's not as if these are the only other engines in Bucks that attend rallies.