Cute Dresses on Amazon

I might have a little problem.  I've been doing some dress shopping on Amazon.  With Amazon Prime you get free shipping and free returns.  It's that free returns that makes me click "Add to Cart" without too much fear!  So far, I've kept everything I've ordered.  They've all been lightweight knit.  I have ordered a size up because I don't like anything to be tight.  Big bonus - they were all under $20!

I started with this black one:

I have this one in green and navy.  The solids go with so many sweaters, jackets and sleeveless tops I already had in my closet.  I'm 5'2" so this is longer on me than shown on the model.

This striped one is super comfortable!   They have a couple red, white and blue ones that would be cute for a 4th of July gathering.

This floral is very similar to the navy and green.

Finally, this plaid one.  I think it's my favorite!  I've gotten tons of compliments when I've worn it and it is SO comfortable!  I think the picture is a little misleading - the pockets are in the seam and don't show at all. 

Are you an Amazon Prime member?  Any great finds lately?