I got each of these items from Cash Shop vending machines. None of them are in player shops, so I have no clue what to price them at. I had the first two in my shop for 50 mil each for a while, but obviously they didn't sell.

I would price each one based off of the current price of the monthly collection that they come from. You probably won't get as much as the actual collection would fetch (since wearables and books sell for more), but you won't get any more than the collection prices either.

Beanbag Pile is from the September 2013 collection, which is currently 43m Flutterfish is from the June 2014 Collection which is currently 36m Logger is from the August 2010 Collection, which is 24m