I talked to @TheRealTShelby on discord about two pixel 7 pro that were ordered on my behalf, unfortunately we could not reach an agreement on when the fee should be paid to the seller. I argued that since they do not have any vouches, the fee should be paid once the money hits the bank or at best, it should be just 50% upfront upon refund confirmation, while they argued that it should be 100% upon refund confirmation. Similarly, for replacement, they feel that the fee should be paid upon replacement confirmation (and tracking number), while I feel that it should be when the replacement is actually shipped by Google and is in transit. Using the middleman is pointless since they want MM to release the funds upon the confirmations, and not upon replacement or refund being received. Seeing no vouches for this service on this forum made me skeptical and so I had to unfortunately back out. Their concerns of potentially being scammed by the users may be legitimate (even when MM is being used), but as a new person to this forum, I still strongly feel that the first buyer should be given the advantage of letting them use a middleman throughout the whole transaction at least until a vouch from a reputed person can be obtained.
Some stores like Amazon are known to not send the refund to bank even after refund confirmation if the account gets OFM'd, and similarly google is known to recall the replacements and/or not ship the phone even upon the order confirmation And so asking the fee upon confirmation is a high risk high reward risk in this case, given the circumstances.
And so, I wish the best to @TheRealTShelby , and if someone reputed does try this service out and it works out well for them, please do let me know