Apparently it is, given how fast free (gratis) alternatives always get posted regardless of how interesting it might be.
Well, the general upvoting of the free versions of things seem to indicate that it is pretty interesting to a lot of people here. I mean, not everyone here is in a position to pay for these things especially when in many cases you don't know what you are getting or you are not in a position to judge it's value.
Gratis stuff down the street is always more appealing than the $1 lemonade stand just in front of the door.