I am currently using a 6" Automation Direct touch screen, created some trending charts and am logging information in a csv format to a 4gig jump drive.
I then created an FTP site so I could extract the data without having to remove the jump drive.
Currently, I am only logging data every 10 seconds.
I believe the screen was about $800 dollars, but I was already keeping it around as a spare, so you decide whether it actually cost or not. The software if I remember correctly was $130.
Redlion also has G3 series touch screens that will do the same thing except they have to use a different memory card. The screen price is comparable to the Automation Direct screen, and the software is a free download (Crimson 2.0). They also have a communication gateway that you can create a virtual screen, but is just a little black box. This can be mounted in a panel or set up in the office.
Just some ideas if anyone is just looking for something to get by. It is not actually free, and probably not readily available for just anyone to get info from, but in some ways that might be a blessing.