Oh man, does that happen? I had no idea. It seemed during the order that $400 (NZ) vs $480 for 256 GB was a decent enough tradeoff considering I wanted storage and cost (and SOME speed beyond 5400 rpm).
I did consider getting a Macbook Air, but I feel since photo editing is my main use, that I would get a bit more out of a dedicated GPU and a nice display.
Anand: Depends on whether you frequently use more than 128GB.
I'm not into photo editing, so I have no clue how much data you're working with. For me, Fusion Drive would likely be enough as I only regularly use Office and SPSS besides browsing and iTunes...I'd still get the SSD out of spite because the Fusion Drive embodies Apple's price gouging. Since you're already dealing with dust in your screen, I'd consider returning it and getting the SSD iMac if you're unsure about the Fusion Drive's cache being sufficient.