Actually, there is no minimum pps necessary to be listed on the OTCBB, but they must be fully reporting. From wikipedia-
Companies quoted on the OTCBB must be fully reporting (i.e. current with all required SEC filings) but have no market capitalization, minimum share price, corporate governance or other requirements to be quoted. Companies which have been "de-listed" from stock exchanges for falling below minimum capitalization, minimum share price or other requirements often end up being quoted on the OTCBB. Stock of non-reporting companies (those without current SEC filings) may be quoted in the Pink Sheets. Most OTCBB companies are dually quoted, meaning they are quoted on both the OTCBB and the Pink Sheets.