I have that breast pump and love it! I bought mine on the way home from hossie as I had the same reservations as you.

There is always ebay which didn't really exist to the extent it is now back then. Sometimes some are put up that are hardly used and they go for a good price as well as sterilisers. Not sure if a 2nd hand breast pump appeals but once they are washed and sterilised they are as good as new!
I had to get a replacement one as mine went walkies