To be honest, we had a few of these scenarios looking for our fourth pin. Not as extreme as a full pin at £200, but things would appear on the market for a 'fair' price and the seller would be so inundated with offers that I'd need to either buy blind, or rush to the other side of the country at zero notice to inspect the pin.
It simply doesn't work for a family with young kids. I can't even arrange childcare for an evening at Special When Lit, and I've been trying for two months, never mind organising an impromptu 300-mile journey to view a pinball machine at under
24 hours notice.