It was worth every penny. I ended up hating Aplix, the diapers I first made before I got my snap press looked nasty very quickly because of the Aplix catching, even with laundry tabs. I just strongly prefer the nice clean look of snaps, and the easier laundry. I also moved into making some of DS's clothing, so I use the snaps a lot for that, and I've also made mama pads, added a snap to an apron that didn't fit right, and use it when I make wallets.
I really think it's worth it, and wish I had gotten it when I first started making diapers. Besides, they have a really high resale value, so if you don't end up using it much you can sell it for almost what you paid for it!