comodo

Any one of you guys used their services? https://www.ssls.com/ Does that basic 3$ one is Lets Encrypt SSL? Any suggestions will be appreciated?

Hi, Might be a dumb question but I have this question in my head for days now. I'm going to buy several SSL certificates for my domain names. Now, my webhosting sells a lot of different SSL certificates. But what's the difference between Comodo PositiveSSL and Comodo EssentialSSL? Can't find...