Having previously challenged Apple’s iPads and Apple TVs with rivals called Fire and Fire TV, Amazon today debuted a series of new Fire tablets and Fire TV media streamers at remarkably aggressive price points. Led by the new $49.99 7″ Fire tablet, the Fire tablets aim to dramatically undercut iPads on price, while the $99.99 4K Fire TV and its siblings were designed to leapfrog new and old Apple TVs with specific features… expand full story