I just went bargain hunting for you in the Costume Section on Amazon. I found quite a few costumes discounted for 50% off or more and priced at $20 or less. These qualify for free shipping if you have Amazon prime or qith a $25 order using super saver shipping. Make these deals even better by getting an additional 20% off your purchase when you sign up for the Amazon Clothing Store Daily newsletter.
Here s what I found:
Mortalia – Size: Child M(7-8) $8.80
Pirates of the Caribbean 2 Captain Jack Sparrow Costume Boy – Child Small $10
Shrek The Third Rapunzel Costume $11
Monsters Vs. Aliens Child’s Dr. Cockroach Costume, Child Medium $11.20
Rubie’s Costume Co Go Diego Go Romper And Headpiece Diego $13.36
Alice Classic Child Costume, Child S(4-6) $13.43
Kids Flapper Dress (XS 2-3, PINK) $13.99
Avatar Child’s Deluxe Costume And Mask, Jake Sully Costume-Medium $15.99
Princess Tiana Deluxe Costume – Medium (7-8) $16
Super Mario Brothers Child’s Deluxe Costume, Princess Peach Costume- Large $16.95
Let’s Pretend Crystal Fairy Costume $17
High School Musical Deluxe Sharpay Costume (Small) $17.48
Transylvanian Vampiress Costume $17.60
Shrek Snow White Costume $18.25
Star Wars Clone Wars Child’s Ahsoka Costume, Medium $18.35
Drama Queens Child’s Scar-Let Costume, Small $18.79
Star Wars Child’s Darth Vader Costume, Large $18.97
Shrek Princess Fiona Costume $18.99
Harry Potter Adult Robe $19.54
Marvin the Martian Child’s Costume – One Color – Medium $19.97
So many of them guys, I just ran out of steam. You can go to this page and browse what is available at this price range. Just note that not everything is sold by Amazon directly, so there may be shipping charges.