Can I create a free auto-graded class?
Thanks for posting, @kpostal10kposta !
To add on, students can try your public classes at any time if you share the community link with them - looks like this: https://repl.it/community/classrooms/ID where ID is the your classroom ID (the number in the URL).
You won't be charged anything for creating an autograded class that students self-enroll in. You must have the "teacher" role to create a classroom, but you don't have to be a "teacher" ;)