Are you self-publishing?
If so, this has nothing to do with "industry standard". That standard is set by the cost of everything the publisher has to do to put that book out and still make money (after paying the author and wishing to make back their advance). That's how prices are set, and for printed it's not really worth their time and money if it's not to their preferred lengths.
Is $0.99 acceptable for a 30,000word novella? (you have a Sci-Fi Novella btw) Yes. I wouldn't mind paying that.
Could it be more? Possibly, depending on the writing quality and story. Other factors like if it's part of a series (first book, IMO, should be cheap to open the door). I wouldn't mind paying up to $3-4 for a good one.
Still, look around at other Sci-Fi self-published novellas and see their pricing, and possibly ask the authors around here of their successes. There's a lot of threads with authors talking about adjusting their prices and seeing more sales (even going higher).