It appears that you can download some Mythlore articles on Amazon.com now (for a whopping $9.95 each download). Here are two examples I ran across this afternoon.

https://www.amazon.com/C-S-Lewis-legac ... collsguid-20&linkCode=osi

https://www.amazon.com/Roots-Branches- ... collsguid-20&linkCode=osi


Not sure what the arrangements are with The Mythopoeic Society and the article authors.