One rule removes most of the field. Under ISO/IEC 17021-1 a certification body cannot also consult, so a bundled implementation plus certificate offer cannot produce an accredited certificate.
What ISO Certification Costs in Pakistan, and What Drives the Price
No page can quote your price, but you can work out the biggest line yourself. How ISO certification cost is built in Pakistan, an audit day estimator from the public IAF rules, and what raises or lowers your quote.