I have been looking for a grip for my K100DS for months, they are like rocking horse ****, very elusive
Especially in the UK. Anyhow I came across this the other day
Ansmann P-100 Battery Grip for Pentax K100D, K110D & K200D - Only £59.00 - SRS Microsystems. very similar to yours audiobomber, but made by Ansmann and available in the UK. Thanks for jogging my memory
Mick