we do have tape light, although it is not recommended for under cabinet lighting. we sell at $5 per foot, if you also need power supply it is extra. we have dimmmable power supply and slider.
we would recommend our Sunstrip10 as under cabinet light, the link to it is:
http://powerledlighting.com/shop/index.php?main_page=product_info&cPath=110_73&products_id=294, you can mount them three feet apart. They are thin profile, each light consumes only 7.5W, but will replace 48W incandescent bulb. Please see this link for more pictures
http://www.sunlitest.com/showroom/index.php?main_page=product_info&cPath=107_109&products_id=257