I hear ya - I really do. It's a big chunk of cash, even just for Fireworks alone.
I've never purchased software on eBay before, but have heard from other VAs that it's a good place to check for what you need at a discount - here's what they've got in the way of Fireworks (looks like they've got some for as low as half price)

I hope the Photoshop trial will let you do what you need to do!

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