Since I mainly fish for Sunfish the tackle is very inexpensive.
The poles and reels are also very inexpensive as well.
I use my sunfish rigs for Crappie and have caught a lot of other types of fish on sunfish rigs as well.
I have two poles and reels geared for Bass and they are my most expensive.
I use my bass rigs maybe twice a year.
Over all I spend around $20 to $25 a month on tackle.
Mainly hooks and shots. Also getting reels respooled . Yearly average about $240.00