If you  have the 99 Cents Only store chain in your area, take a look inside.  Hasbro's dumping the The Force Awakens MicroMachines head playsets there for $4.99, and Hot Wheels Carships and Character Cars are there for 99 cents - I've seen Royal Guards, the Ghost, Poe's X-Wing, and others I haven't previously seen in circulation at the big box stores much/at all.  Good hunting!

This chain isn't in all states - so odds are you already know if they're near you. They also have failed snack cakes and candy bars if you're in to that sort of thing.