Those two listings are 100% the same snake, without question. That said…
I’m a little confused as to how getting an extra gene for a lower price would be a scam? By definition, a scam is deception for gain, the seller gained nothing here if they sold you a more expensive animal for less.
If you wanted to find out sooner, there’s always just having him tested for Enchi. If you wanted to save a bit of money on multiple tests, you could have him tested to confirm the het DG as well.