[inaforty]

$80 is a great price!!

You might consider replacing the zippers.
Trying to get the cushion cover material under the foot of the sewing machine with the foam inside is going to be pretty tough. It's not impossible but you might be disappointed in the finished job. To do the zippers the foam will need to be removed then invert the covers then replace the zippers then reverse. You can use a chain zipper or a Vislon. I kind of like the chain zippers on cushions myself.