drive a price up

and force something up

to force the price of something upwards. Someone is buying a lot of gold and driving the price up. They are driving up the price.

Name	Pronounced	Usage
Ariel	AR-ee-əl (English), ER-ee-əl (English), AY-ree-əl (English)	Hebrew, English, French, Biblical, Biblical Greek
ReİS	-	Turkish
Joost	YO:ST	Dutch
JÓNas	-	Icelandic
Pridon	-	Georgian
Aherne	[ə'hɜ:n]