Not break the bank
Definition 1 of 1
Pro Tip 1/3Budget-Friendly Usage
Use when suggesting options that won't significantly affect someone's finances. 
Let's choose a gift that doesn't break the bank.
Pro Tip 2/3Money Concerns
Implies financial limitations or desire to economize without sacrificing too much quality. 
I need a dress that doesn't break the bank but still looks elegant.
Pro Tip 3/3Positive Connotation
The phrase has a positive feeling, often suggesting a good deal or smart shopping. 
I found a vacation package that doesn't break the bank!