I saw there advt on their website which says buy online and installation in 4 hrs. Don’t trust them. They have no infrastructure(or will) to do it. They would say installation happens within 4-8 hrs however it never happens. I had to call them at least 3-4 times after I bought one online. It took over 24 hrs to get the installation done.
Also, I just one rain signal was. there service time is 24-48 hrs so once your antenna is out of signal, rest for atl eats 1 day before your TV would resume.
HD and other packages prices are competitive. If installation time is not an issue, buy online, you might get some deals not available otherwise.