Have you had your battery replaced yet? How much did it cost?

[jchapman01]

So I've had my Shield K1 for a little over a year now and the battery just isn't staying charged like it used to. I really like the tablet and don't want to get a new one—there's not much out there that interests me.

Question is this: Have you paid to have the battery replaced in yours and if so how much did it cost? Not looking forward to doing it myself.