While LP cases in general are commodities, there's real value in ones that are engineered to keep the guitar safe through catastrophes like touring, flying, children, etc. I'm guessing these cases have, in many cases, been designed with input from musicians who travel with their instruments and have, possibly, sustained damage from conditions that exceeded the talents of standard cases.
$250. That's not a stretch for a set of humbuckers. That's maybe 10% of a nice guitar, to some players. It's probably cheaper than a good headstock/neck repair. Certainly cheaper than replacing the guitar, whether it's a $2,500 Gibson or a $500 Agile.