Totally true! My hair dryer from US in BA doesn't work properly (slower...). I am very frugal, yes, I am not planning to bring freezer, washer, etc.Well very frugal, how about smart TV sets, sound systems, computers, mobiles, tablets, fridge, freezer, washer dryer, toaster, iron , hair dryer, blender/mixer, etc.
Transformers are a pain in the you know where.. you may get the right Voltage 220, , but frequency 50 or 60 cycles affects some devices.
Some devices like iron, toaster, space heaters, laser printers, 2000 Watts require a hefty transformer.