Sure, there are Overwatch comics. They provide more depth to the game's universe and backstories of the characters. They're a great addition for fans who want to know more about the Overwatch world.
Often, it's not straightforward to say if it's cheaper. You need to consider things like where you're sending the comics and if you use standard or express shipping.
I'm not sure exactly, but there are a few series and special editions. You might want to check the official Overwatch website or comic book stores for a precise count.
You can look for them on official Overwatch websites or platforms that have licensed the comics. Sometimes, digital comic stores might have them available for purchase or subscription.