"파리에 사셨네요." -> You live in Paris (It's the situation, the speaker just found out that you live in Paris)
"로마에 살 때 아이였어요" -> I was a child when I live in Rome
"남편이 아내한테 보석을 사줘요" -> The husband buys his wife jewelries
Specifically, 사셨네요 and 살때 can mean 'buy' or 'give' but not at the same time. it depends on sentences
사줘요 only means 'buy'