PCRM has the simplest WFPB food plates which emphasize only four food groups: whole grains, beans, fruis and veggies. They have Shopping Lists and grocery shopping videos for cost effective meal plans.
Toni Okamoto has written a popular book for cost effective WFPB shopping lists and meal plans.
A collection of YouTube videos by different people showing how they spend approximately $30 to $40 per person per week on WFPB meals.
Dr Greger has videos with ideas on how to maximize nutrition on a budget!
WFPB recipe books written for cost effective shopping lists and meal plans.