Respondent's information exchange pursuant to Sec. 22.19(a) shall include information on any economic benefit resulting from any activity or failure to act which is alleged in the administrative complaint to be a violation of applicable law, including its gross revenues, delayed or avoided costs. Discovery under Sec. 22.19(e) shall not be authorized, except for discovery of information concerning respondent's economic benefit from alleged violations and information concerning respondent's ability to pay a penalty.