Well like I said its worth the money.....I use it to send orders directly to my fufillment centers via a .csv spreadsheet. This also allows them to send the shipping info back to my store to be re imported and marked as shipped. Saves me a lot of time and frustration.
If you don't have a need for that particular file format I would just use a custom fulfillment from within Shopify as that is included with your Shopify account.
Takes money to make money unfortunately and any business has running costs...websites are by no means cheap so you should figure in the costs to run your business into what you are selling. Maybe try to consolidate most profitable vendors or buy the items in bulk and set up one fulfillment center with everything. That would also increase your margins....
