Could use a word count/story count opinion.

The next book going up for Kickstarting is going to be the short story collection (I expect it’ll be around November), and I wanted an opinion. Assuming a price point of 2.99 – 4.99 for a Kindle, what’s a reasonable expectation for word count and/or story count? I personally think that it should be more than what was in the sampler, so I guess ‘six stories’ is the lower limit there, at least. Thoughts?