Wonder Woman and Superman swimsuits:  $5.99 each (RSP:  $9.99+ each)

Both off Aliexpress

Since the Batman one worked out so well, I decided to get these ones too.  It wasn't from the same seller, but it was the same great price!

These are knockoffs of the blackmilk version as well.  That one retails for around $100, but it does include a cape.  I'm happy enough with what I got, especially for the price!