Costs and sizes of IIS are consideration fo the selection of issue procedure, which could be Dutch auction, American (English) auction, or in tap form.

• 由于IIS的定价困难，所以在发行方式上，有单一价格拍卖、多重价格拍卖和随卖等方式，在选择发行方式时，成本和发行规模是要考虑的主要因素。