This was a solid purchase.  The mailbox looks great, and it arrived (customized) in less than a week.  The post is pretty solid, despite being hollow vinyl.  We got it installed in less than an hour, and it appears to be fairly firm (although I am hoping that the dirt around the base of the post will harden a bit to make it even sturdier - I fear for the winter when snow plows come, but I worried about that with the previous mailbox, which never fell).  All in all, I am very pleased with our purchase so far.