This user has attempted to sell a Sr. Member account before in 2017 ----> http://archive.is/QCeHA.
So it is possible that this user has a lot of accounts and therefore the utility of any vouch copy is useless unless from are a trusted member.
In general, I wish @PryptoMontreal show us a tx link on the same day [March 14, 2019] and signed a message from that address to check about that deal.