Here is the cost for various locations that i know though i have not visited all of these in this tour:
1-Sheikh Zayed Mosuq, Abu Dhabi -------- Free entry
2- Ferrari World, Abu Dhabi ------- AED225
One time entry for one full day and you can take all rides including Formula Rossa as many times as u want except one ride which costs AED75 per visit.
3- Mercato Mall, Ibn-e-Batuta Mall, Mall of the Emirates, City Centre Deira, Dubai Mall, BurJuman Mall, Dragon Mart, Madinat-ul-Jumeira, Jumeira Beach Residency (JBR) ------- Free entry
All these malls are free to enter so u can roam around till 10 p.m. on weekdays and i think 11 or midnight on weekends.
4- Fountain Show at Burj Khalifa ------- Free entry
This area is free to go and you can also visit Souq Al Bahar after crossing the bridge and no tickets for fountain shows. Enjoy as many as u want.
5- Dubai Mall Aquarium ------- AED50
Worth seeing!
6- Jumeira Beach Hotel pavement towards 360 bar ------- Free entry
You need to enter from Jumeira Beach Hotel reception and go to the back exit of the hotel to reach this pavement.
7- Wild Wadi Park ------- AED205
Water theme park near Burj-ul-Arab
8- Ski Dubai in Mall of the Emirates ------- AED 180 for 2 hrs
Artificial ski in Emirates mall. Its freezing cold in there.
9- Dubai Marina ------- Free entry
It is a residential area but worth seeing and entry is of course free.
10- Atlantis Aquaventure ------- AED200
The entry is for full day n all rides + AED40 for locker if u want one.
There is an aquarium as well in The Avenues Mall for which ticket is AED50 i think
11- Burj Khalifa 'At The Top' experience to visit 124th floor ------- AED100
No words for this one ..... A MUST visit, you will see in the pics in 2,3 days 
12- Desert Safari is also very popular activity which your hotel can arrange for you to join a group which will cost less.
