My wife and I have similar cell usage as you.
We have used Tracfone for more than 20 years.
It costs about $100 a year for each of us (2 x $100). We have plenty of minutes and texts. If you need more texts you can buy 1000 more for $5, and 1 gigabyte of broadband for $10.
The deals from tracfone on ebay are good. I got one just to keep in the glove compartment so if I forget my regular phone it will always be there.
It was 69.95 for the Samsung phone and a year of service with something like 1.5gb of data, 1500txs and 1500 minutes of talk.. but you could of course buy more.