At work we use RapidSSL (a division of GeoTrust) for a handful of certs. Last night I received an email with a banner warning me, "Your certificate is ABOUT TO EXPIRE". The email goes on to list the expiration date as "Oct 12, 2011". Four months is certainly generous notice, but I've always taken this as a simple marketing attempt to maintain customer loyalty.
Usually I take these emails as tickler reminders and delete the first couple. When I eventually decide it's time to renew, I pull up the site by typing the URL into the browser. Upon reading this article, I wondered whether following the link in the email would result in a different pricing structure. As it turns out, the answer is yes, though after playing around, it doesn't appear to have anything to do with the email link.
The first page of RapidSSL's order form handles both new orders and renewals with a pair of radio buttons. Another section of the form allows you to specify the validity period from one to five years. The prices appear alongside the choices, and are currently the same for both initial orders and renewals.
First I visited "www.rapidssl.com" and clicked the "buy/renew" link for a single domain cert. I got an order form with the following prices for 1-5 years:
49, 86, 122, 159, 196
Then I pasted the link from the email (which contains a fairly simple query string that does not appear to have a unique identifier in it) into a different browser. I clicked the "buy/renew" link for a single domain cert, I get the same form with the following prices:
79, 138, 198, 257, 316
It's interesting to me that the difference in price actually increases as the validity period increases:
30, 52, 76, 98, 120
Still more interesting, after resetting the browser and pulling up "www.rapidssl.com" directly, the prices are completely different:
29, 51, 72, 94, 116
I tried the email link one more time and got the 49-86-122 pricing again. Then I tried it one more time and got 19, 33, 48, 62, 76. So clearly RapidSSL is varying their prices on the fly, presumably to gain insight as to what people are willing to pay. I was ready to claim the link in the email yielded higher prices, but that seems not to be the case. So I guess after all that, this isn't particularly interesting. I'll definitely hit the site a few times when it comes time to purchase though.
Unfortunately the pricing structure for a wildcard certificate never seemed to vary.