BitDefender license upgrade

Hello,

I was wondering about BitDefender's 2-year, 2 user offer at the price of one year (for personal products). I wanted to know how long this offer is going to last? I recently asked for upgrading my BitDefender Professional Plus (AV Plus) license to be upgraded to Internet Security, and I got a link for purchasing BitDefender Internet Security for 2 years, 2 users with 25% of the $69.95 price. There, are, however, a few things I didn't like about the way this was handled:

1) My BitDefender Antivirus Plus license lasts till December 2008, and I've been granted an extra three month extension on that. It would have been very highly appreciated if I could have just upgraded to BitDefender IS keeping my existing license period intact. With this "upgrade", I lose a good 2 years of protection, only to gain 2 more. And I pay $52 or something just to get an enhanced firewall, and some parental control features.

2) BitDefender support said that all license extensions that I had received on my existing license (that included 3 three month extensions) would be invalidated. While this is not such a big point of concern for me, I do wonder why this should be, considering that I am still the same user with the same contact details?

3) For license renewals, usually its 25% off, which is normal. But I was not renewing my license, I was upgrading it. In this context, I feel the 25% discount given is a bit low.

Due to the above 3 points, I will say that I am fairly disappointed with the way the upgrade process has been handled. I still have the purchase link with me, and I'm wondering whether to get the upgrade. I will probably upgrade, but it may now take a while because I am a student and I don't have a monthly salary to keep paying almost full price on such things. Many other vendors, like Grisoft for example, allow you to upgrade to a better edition of their product by simply paying the difference price (example: AVG Anti-Malware 2 years: $44.95, AVG Internet Security 2 years, $69.95, cross upgrade from AVG Anti-Malware to Internet Security: 69.95-44.95 = $25).

Overall, I will eventually purchase the upgrade eventually (since money is short right now, thats why I want to know how long the 2-year, 2 user license offer will last, so that I can save up accordingly), as I like BitDefender, but I do feel I've been given a slightly raw deal.