Updating the thread with a new info.
Yesterday my friends were shopping at Funan and bought some gear from Bally photo on the 5th floor. The friends are a couple with two small kids and they are not pros in photography. They were cheated for more than 350 buck in total. First, they wanted to buy a zoom lens for Canon and got 75-300 for 500 bucks. After that, they realized that this is not a fair price and returned to the shop. The salesman refused to return the money but offered them to choose something else for these money. So, they did a mistake here and followed him deciding to choose another lens and went for Canon 70-200 f/4. Finally, the salesman refused to give them the box from the lens and convinced them to buy a hood (70 S$) and a filter (S$ 220!). The hood was supposed to come with the lens (and it DID come) and the filter was usual normal UV Hoya one which is around 20-30 S$ which was advertised as some "super-cool filter', etc. The receipt did not have the exact prices of the items (ya, they are fools not to check it but as I mentioned they are a couple with two small kids which are hard to manage).
Today they submitted a complaint to CASE and went back to the Bally photo to claim their money back. First, salesman refused to do anything of course and saying he is not afraid of police as he is Singaporean. After the husband told they submitted a file to CASE and will go to Funan management and police, these guys became afraid and returned them 340 bucks asking to remove a complaint.
Yes, they did return the money but I'm pretty much sure these people will continue cheating. So beware of this shop! And tell your friends not to buy from there!