Did I mess up?

I've been looking for an entry point into this hobby. snagged a paired DJI Goggles v2 and controller. These require DJI o3 air units.

Used market has these sitting around $330 ea. Do I commit to this system, buy a few used ones, and build on this base, or sell these and grab something else.

Used market near me is dry of o3 units or drones. aside from some crazy $10k bundle deal that the owner wont separate.