This is definitely grounds for a "Item significantly different..." it'* possible he shipped you the wrong thing.
I can't imagine a $10 full size guitar, though. Let alone a playable one. I have a couple guitars, and my cheapest decent one would be ~$80 now. The one in the video is a Ukulele, note the 4 strings
The tuners on that guitar look as if they are set up for steel strings, though, as compared to the "spindle" tuners on your alvarez, indicating it should take ONLY nylon classical strings. Putting nylons on a guitar with tuners like that is asking for them to get broken. It looks like he sent you a toy! :( Like they sent you a six-stringed Ukulele...
Good luck on getting what you wanted instead. Hopefully he'll send you the real item soon.