So, you want new drawer pulls and you want a good value. That sounds like a good plan to me.
You can save time and money shopping online at Amazon, where they sell dozens of drawer pull models for about a buck.
Offline -- "out here in the real world" -- you have a couple options.
For one, you may actually be able to get free drawer pulls. What you will have to do is keep an eye on your area's FreeCycle.org listings. You just never know what will pop up for free there. Of course, this method will take time and patience.
Alternatively (and not for free, but hopefully for low-cost), try a salvage-based thrift store -- a place that resells home goods donated to them. This may be a Goodwill Store, but in the case of drawer pulls, it is more likely to be a "green-oriented" store. The one near me has "recycle" in its name, for example.
Lastly, be sure to hit up garage and estate sales. You might "luck into" some neat and motley drawer pulls for your home, and at great savings.
Have fun pullin' your drawers. (That's me -- silly as ever.)