Originally Posted by
LondonElite
Are you thinking about dropping C to A on the outbound? Otherwise I’m a little surprised that the ticket construction works out cheaper. If you do drop that first leg, the whole ticket will auto-cancel.
It's not surprising. Every travel hacking intro I know will tell you to try not just 1x/4x, but also 3x (the case of the OP) and 1x. 2x seem to be suggested less frequently.
And, for the OP's question: I think in Europe, it's fairly safe to do hidden-city ticketing. Stipulations by the airlines that prohibit it may actually be legally void.