and I am a cash only man how do I buy a Ventra Pass with cash?
"Cash can be used directly on buses and can be used at all Ventra vending machines to add value or passes to Ventra Cards or to buy disposable Ventra Tickets. You can also use cash to load value or passes at more than 1,000 Ventra retailers."
Metra and CTA do have a combined monthly pass. Metra sells a weekend pass for $10 and CTA sells a three day pass for $15. One can buy both.
The South Shore is owned and operated by a completely separate agency in Indiana with their own app and ticketing. Fares for the Hegewisch station in Illinois match the Metra price scheme but the South Shore does not offer a weekend pass. Discounts are available for 10 and 25 ride passes (pass expires when rides are consumed or one year after purchase).
South Shore tickets can be purchased with cash on the train or from a ticket agent (if you can find one open). The vending machines are credit card only.