pitfalls enough. I would highlight the main problems with the fact that you are even so do not see what you really get and can't control what you will bring in what form and of what quality, by the way, for example, can split the display (I have) and most likely nobody will reimburse this damage (although it may be possible to try something with a transport company to take). In any case, this is an additional hemorrhoids that is associated with the fact that you can get is not what you expect. Better to buy local just bought.
Bear in mind that you will need when paying to lose around 5% (depends on Bank) on the conversion rates.
About customs, even if the fee is not subject to, can make you any certificate to provide that this product is allowed for importation, and so on, or just a month additionally keep and check something.