It's about $40 a spool.

I've successfully printed the bottom part of the case, snaps right in. It's perfect.

However, I'm having trouble with the top part. After it finishes processing the model, it wants to fill in the openings (like the holes, the window, and the grooves) with the infil pattern. I don't know why it's doing that. :?: They're supposed to be empty. It shouldn't be filling those areas.

I've set the inil to 0%, I'll see if that works.