Thanks!
GrahamG said:
Set your
ebay search for anything within 25 miles or however far you're willing to travel and just wait until something golden comes up.
I really must thank you fall your replies, but stop you right here. As I said, there simply is no market here for used bikes. Maybe it's just eBay not being popular here due to delivery costs, but even with a 100-mile search, only one was listed in NI and I found only one road bike in the Republic!!
With this frustration, my chance discovery of a bike above my budget that came on eBay late one night prompted me to read reviews and other forums here - worried that a cheap all-alu bike might not be comfortable, THIS bike, with carbon seat and forks was throwing up 5 star reviews everywhere, everyone saying 'the most comfortable bike ever', so after a day of persuading my wife that I needed to increase my budget (not easy considering our old Mercedes had just popped an inner wing and was getting welded as we debated), I was allowed to go for it.
So: a 4-month old electric blue Schwinn Fastback Comp (immaculate) is on it's way to me right now! For a total cost of £370!!

What may have helped was when describing the bike to my wife as we walked through the rain (the car being repaired, remember!), I said that I'd never actually seen a Schwinn. 10 seconds later, I kid you not, a cyclist turned a corner on a bright red model! I said "Look, there's one!", looked to the sky and said "It's a sign!"
I'm sure I'll be glad I went the extra cost, and I'll have many more queries and searching here as I get back on the road.