It only took me 1 second to generate a vanity address with a triple 7 prefix. It can be done easily inside of a browser, even on mobile devices. Even for a more rare prefix, like you were offering in another thread, it would be really stupid for anybody to trust you. There are already free, open source tools available which can accomplish the same thing. It is not necessary to try and deflect by mentioning Profanity, which is an old and irrelevant exploit today. This is a clear attempt to scam.
You are miscalculating the difficulty here. I am not selling a simple 3-character "777" address that you can spin up in a browser in a second.
Look closer at the addresses listed:
0x777C00FEa97093977455BC3f29AD0b0AD14e77B2
0x777C00FE743f80103e0bE1AeC4302C8277895BbC
0x777C00FEcD5474876756c3eE8D4d11957A9C2114
The exact prefix is 777C00FE (8 hex characters / 4 bytes invariant). Generating an exact 8-character specific prefix takes billions of iterations and requires dedicated GPU power. You cannot do this "on a mobile device in 1 second.
Regarding trust: I have already stated that I strictly recommend and support official forum Escrows. If a buyer uses an escrow, how am I scamming anyone? Furthermore, as stated in my previous thread, I offer Split-Key generation. The buyer provides their public key, and I mine the rest. I never see or touch the final private key.
Calling a technical service a "clear attempt to scam" while completely misreading the prefix difficulty and ignoring the Escrow/Split-Key options is just unconstructive.