I was referring to the concept of the script.
Let's compare, shall we?
Finding a buyer/seller: 2-10 minutes of browsing on Zybez's item market. Meeting the buyer/seller: 2-5 minutes in-game. Interaction time: no more than 30 seconds to trade. At a very slow rate you're looking at around 15 minutes to complete a trade.
Now, how much XP can you gain in a skill in just 15 minutes? Can that be compared a 15-minute trade? Skilling is tedious, you do the same routine over and over for the same amount of XP, hoping to grind for the most possible XP per hour or day.
And you'd rather have a script that has only a chance of successfully making a sell, only a chance that another player will buy from you. While in the mean time, you're accomplishing nothing.
Yeah, that sounds like a grand script to me, where do I sign up?... [/sarcasm]