I've never heard of requiring a donation in order to post messages on a car forum; since five messages is an absurdly low limit, and pardon me for saying so, but it strikes me as akin to a shakedown. If you want people to join NSX Prime as paying members, why not just charge a membership fee and be done with it? Unaware of the five message limit myself and reaching it today, there's a marketplace seller who now will not hear from me until tomorrow and probably wonder what happened to our discussion. I'm happy to make a donation, in any case.
Safe travels.
- - - Updated - - -
Having just looked for information about making a donation, and not finding any, how do you do it?