Let me throw my hat in here, too -
PRICELESS.
ABSOLUTELY
FREAKIN'
PRICELESS.
It's a great resource, mainly because so many of those old articles were as much flavor as crunchy bits. Unlike the current style (which I like, don't get me wrong), the older style relied less of pictures, and the space for full artwork being used for more article space. Also, I believe the text size was a little smaller up until about 8 or 9 years ago, too, so some of those magazines were JAM-PACKED, in order to make up for the need to use lots of space for advertisement.
Well worth it.
Lew Pulsipher's "be aware, take care" article is a must-read for every D&D player about to participate in a difficult campaign, or a dungeon-style campaign, because the focus is on using every trick in the book to keep a party alive. I keep telling WotC and Anthony Valterra they ought to buy the rights to that article, update it for 3E, and PUT IT INTO THE REVISED PHB, it's that good in my eyes.