I've been to the Work N' Gear on Route 1 and have gotten Gray's Anatomy Scrubs in the clearance section for $9.99 a piece - the rest of their stuff is seriously expensive. I also order a lot of my scrubs at uniformadvantabe.com They have GREAT prices and they deliver in about 4 days.
I love Work N Gear's Rx Gear brand. It's usually around $10-$15 per piece and they have interesting print tops to choose from. I like the way they fit me but they are very basic styles (straight leg pants, wrap tops). There is also a few Walmarts on the north shore that have great scrubs.