Comixology is having New X-Men Issues #114 - #154 for USD99c a issue,usual price of USD$1.99 an issue.
They have a regular Marvel Series on sale every Friday, reduced down to USD$0.99
Ways to extract further value is to buy the issues via the Comixology where you can use discounted iTunes gift card to make it even cheaper.
1st Post
Sale ends 11pm US Time.
Comics purchased on Comixology can be viewed on Android, IOS and via web browser.