Must ask complete requirements from buyer
What you’re asking client to do is against the rules or Tos (terms of service). It could get you both banned.
It is considered manipulation and it could backfire. If client dislikes your work, you will have 5 - 1 star reviews vice one.
And, that cost more money to buyer. $50 Is $2.50 transaction fee. 5 - $10 Is $5.00 fee.
Are you sure it is against TOS?
so that he (buyer) may waste his 5 important minutes for placing orders and then reviewing 5 of them…