>I am looking for some bug screens that ARE NOT $70.00 plus shipping.

I made my own (for the driver and passenger door) after I tip I got
from the type2 list.  Total cost under $20.00

Go to a WalMart (or similar) and get a roll or two of 1" wide
flexible sticky magnets from the craft department.  Then buy some
screen material and glue sticks for your hot glue gun.

Put the magnets around the window (cut them every 8" or so and leave
1/4" gaps if you want to easily fold the screen when not using it).
Apply the screen to the sticky side of the magnets and trim with
scissors.  The sticky stuff on the magnets doesn't hold too well, so
you need to apply lots of glue with the glue gun in order for the
screen to stick to the magnets but the glue gun approach is easier
than trying to staple or stitch the screens to the magnets.

These "homemade" screens won't look professional, but they are cheap
and you can easily stow them when it's not bug season.