It’s been a couple years since I’ve been there. At that time they had different prices posted for nationalities. Prices were all posted in U.S. dollars. At the time that was the preferred currency they wanted to be paid in.
Before February 28 he has to leave and re enter to get the extra year . No re entry required. Yes you are correct, when he leaves again in March he will need a re entry permit.
Sorry maybe I was confused as to what he was asking.
When you get back just make sure you do a TM30 address update even if returning to same address. That will automatically reset your 90 day report. If any questions at the time of report just show re entry stamp, but they should have that all that in their computer.