99lsguy,
You are correct. You can download and save the pdf files permanently. I burned a CD with all the data for my LS. However, I will warn you, the Repair Manual is broken into *many* small pdf files. It is very laborious to download the entire thing. If you think you will be able to download all of it in one evening think again. You will need an entire day and night in my opinion. Also, when I first started downloading, their web site was very busy and it was taking a long time to download. However, that had been the exception not the rule. I personally purchased a month's subscription so I wouldn't be rushed to get everything downloaded. In addition, I am downloading information from the '01 and '02 model years because I am finding that while those model years are almost identical to mine, their Repair Manuals have sections that are better written than mine. I find it a little odd but the '01 and '02 manuals are helpful to me with my '03.
While I have never seen a Lexus Repair Manual in person, what is on this web site are sections definitly from a repair manual. I just don't know if it is intirely complete online. In any event, I can't imagine what could be left out since there is so much available online. BTW, you can download all the Technical Service Bulletins pertaining to your car in this site.
Good Luck,
03celsior