The cheapest option is a waterproof point-and-shoot, such as the Nikon Coolpix AW120 or an action cam, such as the GoPro Hero3+ Silver Edition, which both go for around $300.
Edullisin vaihtoehto on vedenkestävä, kompakti point-and-shoot-kamera, kuten Nikon Coolpix AW120 tai action-kamera, kuten GoPro Hero3+ Silver Edition, jotka molemmat maksavat noin 300 dollaria.