Used Exercise Bike

Upright exercise bikes with great value like schwinn airdyne exercise bike, stationary exercise bike

Can anyone help finding cheep used exercising bikes?
Ir can be in Hayward or in San leandro like 120 or less please help

What is the best routine for using exercise bike?
I would like to start exercising on exercise bike each day, have on average 30 minutes free to do this. I already do other exercises like take dogs walk etc. I was just wondering how I can get the most benefit from using the bike. The exercise bike has a tension area in centre where you can have setting 1 14, 1 feeling very light and of course 14 being a lot of tension. Any suggestions on how to get the best use of the bike so I get the best work out, for 30 minutes each day. Thanks

Pain after using exercise bike?
i feel pain in the groin area after using the exercise bike. Any idea as to how to alleviate this... Or is this something that all bike riders deal with>