Just take the buttons out, and buy and refit the paddles, lots of people here have done this little change over.
Need the wheel off and airbag out, Subject to age of car you have, I recall you may have to swap the internals of the buttons to the paddles, all do able, later cars were a straight swap. You will have to dremel out the original hole a little to cater for the paddles, but thats easy. The most awkward thing I found was refitting the retaining screw, think from memory it had to be cut down in length to facilitate the paddle fitment.
Best of luck with it.
They're not in Sweden as they claim, actually somewhere in eastern europe but plenty on the UK forums have bought from them, myself included.
I got the 63PP version with alcantara grips and it is the single best mod I did to my car as the original lumpy thin rimmed wheel ruined the experience for me. Seems expensive but given it's the direct contact you have with your car it can make all the difference.