This tip will help you save a ton of money on picture frames AND create hip vintage wall art.
Search for frames at any thrift store such as Salvation Army, Deseret Industries, etc. Decide a theme and try to get frames that follow your theme. For example, maybe you want all black frames, or frames that have gold detailing.
Next, take your frame measurements to a home repair store such as Home Depot or Lowe's. They have pre-cut glass that comes in standard sizes ready to put into your frame!
If you need matting, try a craft store such as Michael's that will custom cut matting for you.
It takes a little time and hoofing around town, but with the huge amount of money saved, and the cool art on your wall, you will be so glad you did!