I have a full sized bike case as well (Evoc something) I bought it used and had to carry it empty when the seller dropped it at the train station which involved taking train with no lifts or escalators (because fuck you people who need those) and then a bus 2 min journey home .. its mahosive and still a pain carrying empty.
I raise you with the Thule bike box that weighs in at 10kg unloaded. Add one 15kg trail bike and some kit and boom - it's close to half my weight. And it has no front wheels.
Never, ever again. We drove to the alps last year. Easier.
I have a full sized bike case as well (Evoc something) I bought it used and had to carry it empty when the seller dropped it at the train station which involved taking train with no lifts or escalators (because fuck you people who need those) and then a bus 2 min journey home .. its mahosive and still a pain carrying empty.