1.
market price; going rate; current price
The prevailing price or rate for goods, services, or commodities in the market.
相場より安い。
It's cheaper than the market price.
この地域の家賃の相場はどのくらいですか。
What's the going rate for rent in this area?
2.
speculation; market trading
Financial speculation, particularly in stocks, futures, or foreign exchange markets.
株式相場が急落した。
The stock market plunged.
COMMON COLLOCATIONS:
- 相場が上がる/下がる - prices rise/fall
- 相場より高い/安い - higher/lower than market price
- 相場を調べる - to check the market price
- 株式相場 - stock market
- 為替相場 - foreign exchange rates
IDIOM:
- 相場が決まっている - it's the usual way; that's how it goes
（若い頃は失敗するものと相場が決まっている - It's expected that you make mistakes when you're young.）