From Bali
There are many shuttle bus companies which have scheduled transport from Bali. Expect to pay around Rp 150,000 per person one way from main Bali departure centers such as Kuta or Ubud. The price will include the ferry and connecting shuttles. The popular Perama (http://www.peramatour.com) bus company will charge only an additional Rp 10,000 per surfboard. The one-way trip by bus and ferry usually requires more than 12 hr of travel to reach Kuta. It is a slow, but inexpensive and comfortable way to travel if that fits your style.
From Lembar
From Lembar the price to Kuta must be negotiated in advance. Competition is fierce and porters will often place your luggage in a taxi prior to settling the price. If using a taxi you should ensure that the driver uses the meter. Assertive behavior can ensure you choose the type of transport and price that suits your needs. The taxi fare from Lembar to Kuta should be around Rp 250,000. If using a hired car ensure that the price is clearly defined before you enter the vehicle and depart.
Perama will also run this route if there are two of more passengers booked beforehand Rp 125,000 per person. The Perama bus will be waiting for you when you get off the boat in Lembar Harbour.