Really nice, even better considering the PC problems you had before/while working on this.
I especially like the lip-sync and the character's facial expressions all look like how they should for each situation and emotion, doesn't seem like you tried to cut-corners with that which is always great!
Something i think could be improved is the space management, for example that cashier girl's first frames show her next to the counter but there's a lot of free space around her, i think maybe filling it up with some more counters (even if empty) wouldn't be such a bad idea.
There were also a few moments where the voice actor's breath hit the mic and sort of ruined the immersion but they weren't too bad nor common, i'm also sure you can find some tips online on how to prevent doing it in the future.
Hope to see a bunch more of your shorts here on NG. Think you really fit with the style and type of humor people have around here.