I must be missing something or have some grandfathered Verizon plan that is in a sweetspot since everytime I review Verizon MVNOs, I am disappointed. My Version plan is 4 people, all iPhones ranging in models, unlimited calling, unlimited texting, 10GB shared data for $145. That is about $40 per person. Now our phone are owned, well really paid off through 2 year contracts that ended.
Sure there are MVNOs that offer slightly lower prices but for less data, sometime data speed thresholds, and sometime minute caps. Could we work without those boundaries and save some $, sure but it hardly seems worth it.
Also, I get it that OP's question was for a single user plan and that family plans can provide some pricing reductions but I wanted to share how my MVNO exploration has, so far, led me to stay with Verizon.