These kids’ swimsuits are all $16 or less + free shipping! Use codes GFPLUS and GFSHIP at checkout. They have many more with sizes from baby to big kid. (commissioned links)

Girls — https://rstyle.me/+0GMcHXYgRYNoCAdTVPk-ng
Boys — https://rstyle.me/+E82JEY-U6Z3PXfRtfgau0A
Toddler girl — https://rstyle.me/+cBbjTgX6KlmJJQkJw_QF7w
Toddler boy — https://rstyle.me/+29FLV1NKAUxJ6E3GtOESoA
Baby girl — https://rstyle.me/+Ec9_xofABu_IRdvVhby0Rw
Baby boy — https://rstyle.me/+gU0G7BCFwbk0nXDeV3owiQ