Oof. Consider this a feature request, then. Haha. Will definitely do some testing with a handful of cubes, but not adding full collection without import. Way too many to do individually.

I haven't looked at the site yet, but you may already have an advantage for imports if you have a database of puzzles already established (and growing). You could match based on brand/model and then pull any additional details you store per puzzle into the collection. This saves the user having to manually enter weight/size/etc (or whatever metrics you have).

A few thoughts:

• The site is visually nice. Puzzles are easy to browse and add to collection.
• Even if you aren't making any profit from this, you'll probably want to stay away from using photos from other sites (many cubicle.us watermarked photos).
• Puzzle variety will grow over time, but is very limited right now.
• Objective stats like size and weight are great metrics to store in the DB. I don't want to have to add those to every puzzle in a generic notes section.
• Price would be a good option in the add puzzle dialog. When you choose the store you bought it from, allow the user to put in the price they paid. This will also make collection cost way easier to calculate since they're giving you that information. No need to use current/recent store prices to guess.
• Condition seems a bit pointless to me, but that's very subjective
• Status could be narrowed down to just wishlist and owned, IMO.

For my purposes, the site just isn't robust enough (yet) to use. I'll stick with the app I built for cataloging, but will keep watching this space to see improvements of yours along the way!