Being expensive or highly priced; of high cost or value (na-adjective).
これは高価な腕時計だから扱いに注意してね。
This is an expensive watch, so handle it carefully.
高価な買い物をする前にはよく考えたほうがいい。
You should think carefully before making an expensive purchase.
高価だが品質は申し分ない。
It's expensive, but the quality is excellent.