Absolute rip-off - $37 for 3 hours!
Here is a quick run down of the tour we took and the truth behind what was advertised in their brochure (Trip #2 "Discover Honolulu's Hidden Waterfalls") :
"On this excursion (within the confines of Honolulu, you never leave the city), we visit the beautiful Liliuokalani Gardens (stuck between houses and the busy freeway), home to many native Hawaiian plant species (and trash and the smell of urine) and the scenic Waikahalulu Falls (small, dirty, trash-filled lead-in to a sewer). Travelling into the lush Nu'uanu Valley (a housing estate), we stop at the Royal Mausoleum (that you can't go into), the sacred resting place of Hawaii's kings (so sacred you can free to steal fruit from the ground), and then visit an ornate Buddhist temple (not ornate, more imaginary, as you never visit it).
We walk along a cool (dirty, mosquito-infested) stream (located behind a funeral home), to observe ancient Hawaiian petroglyphs (or alternative 21st century graffitti) and visit the myth-endowed Kapena Falls (so myth-endowed that rituals involving breaking glass beer bottles and leaving sanitary towels behind are commonplace. Oh, and the cars on the road driving past add to the ambience of the area.)
We drive to the Pali lookout to see one of the most beautiful views in the world (nice, but take a taxi there instead.) We observe, from a distance (take binoculars, but be sure to look quickly, as you see it while stopped momentarily at a junction on the way back to Waikiki)..."
We have travelled around the world extensively and found this to be one of the most expensive and worst trips we have ever taken! Avoid like the plague. A fellow daytripper had nothing good to say about another trip by this company, so we'd advise steering well clear.