I thought I was going to get into kayaking so brought this.  It hasn't seen sea water, just been used for a few test calls.

Amazon listing:

AmazonSmile: Standard Horizon HX300 Standard HX300 Handheld VHF Marine Radio

Asking $120NZD + shipping (I am Rolleston based).  Suitable for a boat owner who doesn't want to drown in a tragic accident.