Yes. Brian Henson, Andrew Prowse, David Kemper and Rockne O'Bannon have all said that they have plans for more Farscape. Claudia Black has also said she would return to do more Farscape.
So it isn't just Ben Browder who is interested in reviving the universe.
Brian Henson wants to take Farscape to the big screen - a feature film. Since The Jim Henson Company owns Farscape - he kinda has a fairly big say in what happens next.
As to selling off props and costumes - it costs a huge amount of money to store costumes. Ridiculous sums of money. Especially when a lot of the costumes will probably never be used again (i.e., the bunny outfit from Bad Timing). It makes more sense to auction them off and then rebuild what they will need for the movie.
God, I love science fiction!
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