Not sure if this helps but I have one made by hones from the black forest region of Germany. It seems that good ones comes from that region. Hones is a pretty young company and their product are good and reasonably priced. There are older companies from the same region, hekas, Anton Schneider, romba and others. Just make sure they have the VDS certification for clocks made in the black forest region. Quartz clocks do not have the certification.
Price varies with size, movement, complications and animation. Go for those with the 8 day movement, and some degree of animation. Also, unless you like the music 24 hours, select the movement that comes with the ability to silence the music at night. Awesome when this is done mechanically with just a small lever.
As for accuracy, you need to mount the clock flat against the wall and have the time, over a few days to regulate the clock. It is a question of adjusting the weight on the pendulum up or down to improve the accuracy.
Price. Expect to pay around RM 1k to 2k for the 1 day movement. 8 day movement will set you back around rm4k upwards. These are movement with music.