My opinion? There is no opinion, I'm 100% sure it's just bullshit, fresh user, auto-buy, sells script.. Congrats tell me one developer who sells his hard work through auto-buy sites..
So true.
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Your "prove" is worthless.
You can prove that you're not a scammer by doing a simple thing ,
Just upload your script to your (OR free) hosting ,and show us a demo.
Till then ,I'm in doubt that someone will buy it.
And I would even flag you.