This is what I normally do.
- Find exact model that match your criteria. Use criteria search available in GSM Arena
http://www.gsmarena.com/search.php3
For example you want a 13MP camera, 5″ screen size, 2GB RAM, 16GB Internal storage etc. - Then look for price of the phone in lazada.com.my or in mudah.my
- When you are shopping outside in the mall, at least you know what’s the price range for the model that you are looking for.