Greetings from the Philippines! Im planing to go to Lantau Island next week

particularly Ngong Ping Village, and Im looking for a cheap DIY ride going there from Tung Chung MTR.

My first plan is to ride a standard cable car from Tung Chung MTR to Ngong Ping Village; after spending 3 to 4 hours stay there, i wanna ride bus in Ngong Ping Village going back to Tung Chung MTR.

I saw some videos in Youtube, there's a promo going to Lantau Island by cable car and riding a bus going back to Tung Chung MTR? it cost HKD81 only. Is it true? If so, where can i purchase discounted ticket?

Thank you and more powers!