Yes, that's what I was saying, we don't have any idea however, you will have to question why the price is cheap. Not sure about Wallet Connect, but I'm thinking if he can customized it to accept not just altcoins but also bitcoin because that's what majority of casinos are offering.
And maybe when a potential buyer ask for a customized script, then maybe that's where they will be caught by OP as he can charge thousands of dollars for customization and who knows, perhaps support as well.
It's suspicious selling a source code that cheap, he'll have to prove that he owns the source code not posting a demo is questionable alone if you're a script developer you are proud to show a demo and the accompanying documentation, there was a guy selling a source code of one casino but in fact, he is just a reseller or a buyer who just decoded the script.
It's hard to justify selling cheap casino software because you did not get your payout from a source you did not mention.
To be fair, we have no idea on what the personal or financial situation of OP is, he may be desperate enough to offer that source code at that cheap due to an infinity of reasons, considering his story of not being paid what he needed , though, I agree with you when you say he should have linked to a demo and shown proof of ownership of this project.
Since he has not yet provided clarification, I assume he already left this forum when he saw we started to ask for things he cannot give and we are not so easy to be sold whatever he is trying to sell around.
Whenever something is too cheap to be true, assume it is a scam, folks.