Linux Pro Magazine
Monthly (12 issues/yr), with DVD, usually with a Linux distro.
Also available as in a PDF version. (Q: For additional subscription? Note that "DVD contents are not available with the digital version of the magazine.")
Good info and quality. ChemIT has samples from the 2013 year, if you want to take a look yourself.
$99.95/yr (averages to $8.33/ issue, vs. $12.99 per single or back issue)
http://shop.linuxnewmedia.com/us/magazines/linux-magazine-linux-pro-magazine.html
Try it first with 3 trial issues for $3 total:
http://shop.linuxnewmedia.com/us/magazines/linux-magazine-linux-pro-magazine/trial-subscription.html
Admin Magazine
"For all Linux and Windows IT-administrators"
Bi-monthly (6 issues/yr)
Good info and quality. ChemIT has samples from the 2013 year, if you want to take a look yourself.
$59.95/yr (averages to $9.99/ issue, vs. $15.99 per single or back issue)
http://shop.linuxnewmedia.com/us/magazines/admin-magazine.html
Linux Journal
ChemIT has not subscribed so we can't confirm quality or relevance.
Digital issues only, in various formats for most any reader:
* Desktop
* e-Reader (Nook, Sony Reader, etc.)
* Kindle
* Android device
* iPhone/iPad device
(In addition, subscribers have access to their PDF back issue library.)
https://www.pubservice.com/Subnew1.aspx?PC=LJ
$29.50 for 12 digital issues (averages to $2.46/ issue, vs. $5.99 for single, back issues)