The value will fluctuate with the current Steem price and the votes you've had. Initially it can be exciting to see a post value going up. Damn it, I still do that!

BTW There's currently something that makes posts less valuable if you do more than 4 in a day, but you may not be bothered to start with. I find this concentrates my mind on quality over quantity. This is one of the limits they may remove in time, along with the 6 levels of comments.