The minimum cost of applying for an IPO: shares per lot times the offer price (public offer applications are made at the top of the price range in the prospectus). For example, 100 shares per lot at an offer price of HK$60 is HK$6,000. This is a common label used on this site rather than a term in the Listing Rules; it excludes broker service fees and financing interest, and the brokerage and levies HKEX lists.
The links above lead to official sources such as HKEX and the SFC. The explanation on this site summarises them and may differ from the official definition; the official documents prevail.
This page explains the HK IPO term "Entry Threshold" and links to related terms. Definitions are compiled from HKEX Practice Note 18 and the Listing Rules, for understanding subscription rules only — not investment advice.