Mechanical keyboards are great for gaming, but it’s all too easy to spend way too much on one. Corsair’s most expensive model is nearly $300, and it’s missing a lot of premium features. Meanwhile the humble K70 Core scored an Editor’s Choice award from my review, partly thanks to its great value. Today you can pick one up for just 80 bucks, $30 off its regular price. Amazon is selling the K70 Core, with the included wrist rest that usually demands an extra $10, for just $79.99. That’s about the best deal you can find for a full-sized gaming keyboard with great switches and some interior sound …