"Don't take it today. It's not fresh. Better come in 2 days when we have a new supply.", or a seller saying:"You better buy this thing in a store around the corner, it's cheaper there.", and stuff like that.
Did you know.
You can check the things you are buying with your own check. The seller selling a fish, said fresh and I still can check it right (How to check a fish still fresh or not) based on the a few check on the fish.
The main point is, there is still no third parties machine who can check the reality is the RTP on Demo & Real is the same. @panjul07 is also giving good points as well for this case, is up to you to believe it or not (But I still not believe)
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If you said, we the person who are not believe the RTP is not same (Feel free to prove it). Can we also ask the person who are believe the RTP Demo & Real is also prove it by creating a machine check from third parties (Like hash game).
That's why I said, this is still the hottest topic without a valuable answer on the slot community.