I fell in LOVE with this blazer from Anthropologie (no longer available online), the cute polka dots make it so playful and perfect to throw over a maxi for summer. Even though $168 isn't bad at all, I felt I could find a cheaper alternative (plus the fact that I couldn't find it online and the nearest Anthro is hours away).
Mango has a navy small polka dot blazer for $69.99
Target has this light weight jacket in navy for $39.99.
I found this black large polka dot blazer at Forever 21 for $24.80
eBay also has a ton of vintage polka dot jackets and blazers to choose from under $20!