That's why nobody purchases anything here! We all import, as you say, via Amazon and either use a service that imports the items directly!, or just send them to anyone that's already making the trip. Of course the taxes are severe, but they just reserve too much margin of profit. That results in them not selling anything! The strong downside is that you cannot test anything before purchasing, as, since the prices are so absurd, no one has anything in stock, they just custom order if you are foolish enough to order through them.
Most technology things are priced similarly... though computers have seen a better ratio this last few months, this 'elite' type of equipment has not been so lucky. Smaller items are the clear winners as anything less than $400 and weighting less than 4kgs you can import free of any taxes (and only pay about $20 shipping). Bigger items do come through customs and then you are on uncharted territory... for instance, camera lenses do not have a category assigned to them, so you depend on the clerk dealing with your case to determine in which category it falls, which could lead to 20% import + 12% VAT + 20% safeguard. If you are lucky, you can get away with just 12% VAT (that you cannot avoid for anything!)
Yeah, our country's population has a much slower EOS-equipment growing-rate than most! LOL! 
Rafa.