Visit the product page
and scroll down to "Bundle & Save"
Under "Choose a Size" for the keyboard, select "MX Mechanical"
Under "Choose a Style", select your key style (Tactile Quiet, Linear or Clicky)
Choose your color for the Mouse & Desk Mat
Click "Add All to Cart"
Add an extra Desk Mat
or any item over $20 to cart
Note, if you do not add an extra item then the coupon will only discount $30 from the bundle instead of the full $50 discount
In cart, apply promo code GRAD22USD
Price should be $269.98 - $50 w/ promo code = $219.98 w/ free shipping