Off the peg
Definition 1 of 2
Pro Tip 1/3Budget-Friendly
Describes clothing or items more affordable than bespoke options due to mass production. 
As a student, I prefer off the peg clothes instead of expensive tailor-made outfits.
Pro Tip 2/3No Waiting
Refers to products available immediately, without the delay of custom fabrication. 
I needed a suit quickly for an interview, so I bought it off the peg.
Pro Tip 3/3Standard Fit
Implies the product won't be tailored to one's specific measurements but follows standard sizes. 
The off the peg dress fit her well enough, even without alterations.