well a ballpark average for a software engineer right out of college is around the tune of $60K.
what I've seen is that anything goes for a startup. it depends a lot on how well funded they are and how in tune with the establishment the founder(s) are. but if you ask me, you should really not be assessing a startup based on salary. doing a startup is a passion. why would you do one otherwise? if salary is important to you, then just stick with the small company doling out $100k for a QA position sort of gig.