A Ukrainian high speed Shahed interceptor costs that much and has a very short range.

You're off by at least an order of magnitude. The camera mount you'd have to put on such a drone would cost about that much, probably more.

You're also vastly underestimating just how big the ocean actually is.

And finding the aircraft carrier is not the penultimate step to destroying it (a "few" anti shipping missiles aren't getting through those defenses).