Hubby bought one from Impact Canopy (
https://impactcanopy.ca ). They sell parts. They aren't cheap. I agree with Annie that cheap doesn't last. This one's fairly heavy, and a bit tricky to shut with only 1 person, but two people can do it easily.
That said...
1. plan how you're going to stake/weight it down up front
2. Don't back the car into it, hitting one leg with the side mirror (yeah, both the car and the canopy needed repairs... sigh)
3. I wouldn't want to leave it up if the snow is heavy if you aren't there to clear it off.
4. Are you *sure* 10'x10' will do the job?