@OP This script is worth $20, domain is worth less than $5
I don't think if it would hurt people that much to buy one on their own and install it on their own website. But the even the starting bid of 0.1 or the BIN really hurts.
You don't even have that much of a traffic which makes it worth that much of the money you're asking.
You may have to lower your starting Bid, minimum raise and BIN if your intention is to sell your site. Just an advice, take it or ignore this if you don't like it.
So is this like slut.io?
Yes.
We can all buy the same script for less than 0.05
BTC, why would we pay you 0.1
BTC+ to you (no offense, its better to buy the code from the source instead of a 3rd party anyways)