There are not many options for streaming local broadcast channels. Some stations offer their own feed (but not many). But there are some, and I believe you can stay well below $100 with most if not all of them. Here's what I can find with a quick search (not in any particular order)
Hulu Plus Live TV $76.99-89.99 85+ channels 30 day free trial
Sling TV $40-60 from 30-130+ channels 3 day free trial
fuboTV $74.99-94.99 220+ channels 7 day free trial
Paramount Plus $5.99 only the local CBS station 7 day free trial
YouTube TV $72.99 100+ channels 7 day free trial
Sling TV might be the most cost-effective choice. However, I just dug deeper and found this caveat:
FOX, NBC and ABC are available for some Blue subscribers in select cities.
So, not all locals are available there. Hulu with Live TV is $76.99, and has the most generous free trial period. The higher monthly price is to remove ads (except for Live TV).
Dan
Roku Community Streaming Expert
Help others find this answer and click "Accept as Solution."
If you appreciate my answer, maybe give me a Kudo.
I am not a Roku employee, just another user.