Hong Kong company Audit

Good day. We are looking for an auditor, who would be able to work with TWO (2) of our clients. They are looking for nill accounts (NOT dormant; active but nill), audits and all corporate PTR/tax submissions. To be competitive against their current secretary offers, we need to bid low, which is why the offered price for BOTH sets of accounting+audits+submissions should not be above 500 USD in sum total. Given that these are simply copy+paste done documents and minimal actions, we would appreciate if suitable candidates (practicing auditors in Hong Kong) could provide us a reasonable quote to onboard these clients for yearly service with us, which over time may become more financially interesting for all parties involved. Thank you!