Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Tubepre

If you are international buyer you will buy this item at your OWN RISK. The most important part is that once you lost your POWER SUPPLY it is very hard to replace. At the time I bought this the power supply did not work and right now I have spent over $200 to find the one that suit the item, and I try to order off their web site but it said "US only" that's mean if you're not live in US you shouldn't buy this.. I am from Australia and very disappointing that I can't find a right power supply for this