GPLv3 section 7 begins with the following text:
“Additional permissions” are terms that supplement the terms of this License by making exceptions from one or more of its conditions. Additional permissions that are applicable to the entire Program shall be treated as though they were included in this License, to the extent that they are valid under applicable law. If additional permissions apply only to part of the Program, that part may be used separately under those permissions, but the entire Program remains governed by this License without regard to the additional permissions.
The Lesser GPL is simply the GPL modified by exceptions under section 7. The first point listed in the VMime link you provide is not an interpretation of the LGPL, but an additional permission, allowing static linking to the VMime code.
The second point is simply a paywall. Copyright holders, and anyone who distributes FLOSS, are permitted to charge as much as they like.
The third point states "You may NOT relicense the VMime code to anyone." If we interpret this as prohibiting you from distributing the software, this effectively creates a "frankenlicense" from the GPL. Luckily, the GPL has you covered in section 7 paragraph 4:
All other non-permissive additional terms are considered “further restrictions” within the meaning of section 10. If the Program as you received it, or any part of it, contains a notice stating that it is governed by this License along with a term that is a further restriction, you may remove that term.
Of course, I wouldn't advise you to do so unless you're willing to test the GPL in court, but know you have the right to ignore point 3 and redistribute the library code.