That's how it is in the USA, although some merchants will include the appropriate version of the 'Survival Kit' (at additional cost, of course) when you purchase a PSR-E453 from them- or you can just purchase the PSR-E453 without any 'extras' if you already have a suitable power adapter. In some places you don't get a power adapter when you purchase the PSR-E453 and similar models you must purchase a separate 'Survival Kit' that contains the correct adapter. I was wondering, is this a global phenomenon of Yamaha's support, or is it just a Greek innovation? I asked him to send me that with post and he said that he can't send this to me, he will send it to that store and then I will have to talk with them and if they agree to send this, I must pay all the post expenses for send and receive. The problem is that this store is 100km far away from my home, so that means +100km for return, so it will be like I buy it new, because I will pay it in gasoline. The representative was kind and he told me that even the guarantee doesn't support this, as it is something expendable ( ), he will finally send me a new one, but I have to go to the store that I bought the keyboard, to return the old one and receive the new one. They told me that the power supply is not supported by the guarantee. I searched at Yamaha's site for support and I called the Yamaha representative of my country, to talk about my problem. I used a power supply from another keyboard and my keyboard is working fine. I tested it with a multimeter and it's dead. I have the PSR-E453 for about 6 months and suddenly the power supply stopped working.

Yamaha psr e403 not working