Starkeeper,

Sales Lesson No1: Insist (that you did, by sending the e-mail)

Sales Lesson No2: Give incentive.... (tell you are going to give bad feedback, so the other side has something to lose)

Sales Lesson No3: Follow up, either with the same or "higher yield" means of contact (telephone). ASK about what's going on, show interest.

Sales Tip No1: NEVER sympathise with the other side (You are there to get the keyb at this fantastic price, not hold hands. After you get it you can become close friends, or marry the guy, whatever you wish)

Let the above sink in, and REPEAT.
Results guaranteed.

ROFL, sorry about this rant but it is closing time at the office now, so I am still in "work" mode. I am not that sleazy in real life, believe me.

Hope you get the keyboard you deserve.
Theodore