Yeah, I do the $49.99 monthly subscription. It lets me access up to 15 subreddits, and I can give out 150 upvotes, and 25 downvotes. I'm also allowed to post up to 10 submissions a month, and comment 100 times. This comment is costing me something like 7 cents. They don't really break it down by "each submission costs x" or "each upvote costs x". It's all rolled into the monthly fee.