I'm aware of that and I plan to exploit it. Since Slovenia is in EU a friend from Croatia that is travelling with me will actually buy the camera and I'll be paying for it since it is for me. I also hope I'll avoid paying tax, since I get certificate from Slovenian customs and Croatian customs collect the tax only if they know I got the certificate

My friend smuggled a pair of shoes from Slovenia this way. I don't know if I'll be able to smuggle something as expensive as DSLR since customs might be obliged to inform each other about articles above certain price limit.
Have to investigate rules and possibilities.