I have started and sold 3 businesses in my life and what I know now is good advice is priceless.
Business advisors. Financial planners. Tender writers. Tax specialists. Accountants. Industry professionals.
They are specialists.
Same as the guy fixing your air con on a 40 degree day. You are paying for years of expertise, mistakes and experience before your problem even showed up.
The expensive part is usually not the advisor.
Its getting advice too late.