Kawaguchiko bus without daypass

I'm visiting Kawaguchiko area for 3 days, and according to the bus operator site, the only prices available is for 2-day passes.
http://bus-en.fujikyu.co.jp/heritage-tour/detail/id/1/

On the day of checkout I won't be needing a brand new 2-day pass. That'd be silly, and very expensive. So I was wondering if it's possible to also use those buses like normal buses where you get a numbered ticket, and pay in cash upon getting off.

I'm staying at the Route-Inn Hotel, and as I understand it, they don't provide a shuttle service to the station, hence my question for the regular bus service.

If you look at the PDF map it says you can pay 1-way fare by cash. It doesn't list the fares, so I suppose you can ask them while you are riding it earlier in the week and then decide if buying a pass for day 3 is worthwhile.

Yes, last time I ask the counter information, they said if you don't want to buy 2 day pass, you can pay to the driver bus, depends on route you ride.

Excellent, just what I wanted to hear.
Thank you :)

Fujikyu has fare charts for the Omni Bus lines on their Japanese website: http://www.yamanashibus.com/omnibus. For example, expect a fare of 220 yen between the Kawaguchi-ko Station and Asagawa Onsen Town stops.

It's also worth noting that, at least when I was there in November 2016, the buses do not accept IC cards (Suica, Pasmo, etc.). I don't know if this has changed, but I would carry plenty of small change just in case.

Thank you, that will come in handy!

Carrying cash isn't an issue in Japan, as most things are paid by cash anyway, afaik. And I assume the cash terminal in the bus also has a receptacle to exchange money into smaller coins, as they always do.