completly agree.I've worked with some pretty low budgets before, investing into link building campaigns for SEO. And let me tell you, nothing has worked better than Facebook, or more instantaneously.
Compared to Google Ads, Facebook seems to be the cheaper alternative.
If your budget is less than $100.00, I don't recommend advertising, because you have bigger fish to fry. However, anything above $500.00 is enough to get some traction and begin optimizing for results.
Most of my clients and I are spending anywhere from $1,000/m on the low end to roughly $15,000/m on the high end in ad budget. Every situation is unique, and some automotive groups have the money and time to invest in themselves.
p.s. 100$ budget lol