Albert Hall -Consolidator offer on seats probably normally open in the codeshares and onward connections at either end .
They have no intention to sell at the price indeed at all however their codeshare arrangement will insist on capacity limits and availability.
Some of the codeshare rules can be quite esoteric at times !
You could look at some of the Flybe/Air France fares once offered via Roissy and onto Central Europe - £600 -£800 fares were not uncommon on the Flybe pages yet half that on Air France.