Check these video out for scam prevention.

Acting on the false belief that Singapore has extremely low prices on electronics, tourists flock to Sim Lim Square to snatch up the latest cameras and computers. 

Some unscrupulous salespeople are unable to resist the easy sales and take advantage of tourists who assume they’re getting a great deal.


Most of Sim Lim’s vendors are reputable, but you can defend yourself from the rip-off artists by following these tips:


Compare prices
Before you make a major purchase it’s a smart idea to check the price at other local shops and even in your home country. Prices on new brand-name electronics really don’t vary that much and Singapore is definitely not the cheapest place to shop. I got a much better deal on my DLSR camera in Canada and the warranty is longer!


Information is power
It’s easy to use the internet to check a product’s suggested retail price and even print out information about
what you plan to buy. S$400 may seem like a great price for a digital camera with accessories, but not when you later discover it’s an old model and suggested retail price is now S$300.


Confirm the total price
One of the most common complaints is salespeople who add surprise 'unlocking fees' to the bill for phones and video games. These fees are often a scam.


Be wary of fakes
I don’t recall Apple launching an iPhone nano, but I have seen one at Sim Lim Square! Though police raids have made them rare, fakes do exist.


Don’t be charmed
The shops on the first floor are known for specifically targeting tourists. Anyone who shouts at you across the mall about special deals ‘just for you’ probably doesn’t have good intentions.

http://forums.gameaxis.com/showthread.php?t=1499020

http://www.sgclub.com/singapore/bad_service_sim_153590.html

http://forums.vr-zone.com/pc-console-games-garage/133146-beware-game-shops-sales-tactics.html

http://forum.gameaxis.com/showthread.php?p=21635833

http://www.asiaone.com/Digital/Features/Story/A1Story20090514-141410.html

http://www.clubsnap.com/forums/showthread.php?t=192394

http://www.singaporeexpats.com/forum/ftopic56971.html&sid=2bb1f2a6cf6c60b558035aed8f9338eb

http://forums.vr-zone.com/world-news-singapore-affairs/418426-news-tourist-cheated-thrice-one-day-sim-lim.html

http://forum.lowyat.net/topic/1732117/all

http://singaporeseen.stomp.com.sg/stomp/sgseen/this_urban_jungle/974594/sim_lim_shop_charges_me_661_for_ps_vita.html

http://www.complaintsboard.com/complaints/mobile-apps-pte-ltd-02-72-sim-lim-square-singapore-188504-c580285.html

http://talkback.stomp.sg/forums/showthread.php?t=28013

http://www.scamfound.com/f13/pc-geeks-simlim-square-overpriced-items-rude-staff-165699.html

http://www.moneysmart.sg/frugal-living/5-money-saving-ways-to-buy-electronics-in-singapore/


It is hard to close these shops despite the complaints because they will register the shop under another name and owner. That is why it is recommended that one should only buy game console from established or reputable shop. The best game console shops are those that has repeated customers and grow by word
of mouth, and will strengthen their company brand through good value for money and excellent customer service.

Remember these rules !


Rule #1:     
Never buy gaming console/games in Sim Lim Square. Unless they are recommended by friends / relatives.



Rule #2:     
Remember Rule #1 because it is so important. No need to spend money to learn the lesson because many people have already done so for you.



Rule #3
Only buy from reputable shop who shop name is a well-known brand.  As to what game shop is reputable in SLS, I don’t have the answer since generally many in internet forums speak negatively of game shop in SLS. Probably can treat Rule#3 as non-existent then.

However, if you still wanna buy gaming items in SLS, make sure that


Rule #4:     
Whatever you buy there, double check the purchased item before you step out of shop. Open up any item even if it is “cheap” accessories, battery or anything. Request to test if possible whatever you buy at the spot even if the shop is reputable or grant 1-to-1 exchange within grant period. Most importantly, check your receipt properly (eg date, serial number, item list)  and make sure all items are listed. Never trust what they say (even if they say that the item is already in the bag), only trust what you see.


 
Rule #5
Only buy the item you have originally in mind. If the item is not available, walk out immediately. Do not let the staff recommend other items because they will (definitely) mark up to high price and also “force” you to buy having told you that they already prepare the receipt and make the order.


 
Rule #6: 
Do your homework. Don’t ever buy any expensive item on impulse else you find the most ridiculous reasons ever giving to you just to rip you. There are many affordable internet cafes around SLS that cost less than $2 for 1/2 hours, and you get use it to google the item and the name of the shop you about to buy from.


 
Rule #7: 
If you get ripped off, take as lesson learn. Complaining to Police and CASE is unlikely to help much because chances is that your predicament isn’t new too and that particular shop very likely to be already blacklisted. Those shop owners may even challenge you to call the police or report to CASE. You are buying and patronizing those shop with your eyes wide open.