save (an amount of) (money) on (something)
To conserve or avoid spending (an amount of) money on something. You could save on your electricity bills if you stopped running the air conditioning so often. I saved over $200 on my flights by using this discount service. I'm hoping to save some money on a new computer during the Black Friday sales.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
save (money) on something
to save money or some amount of money on the purchase of something. I can save a lot of money on this purchase by buying it somewhere else. I am sure you can save on a new car if you shop wisely.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
1. To conserve money by purchasing something at a discount: Save on all kitchen appliances during our special clearance sale!
2. To conserve some amount of money by purchasing something at a discount: I saved a dollar on my purchase by using a coupon.
The American Heritage® Dictionary of Phrasal Verbs. Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.