I do have another one as well. How much do you think it is worth?

Why don't you put it up for auction, NO Buy It Now, and just let the auction run and find out.

While a Ninja Experiment, BNIP, might go for a bit more then 279 on an auction (or it might not), I believe 279 USD was a good and very honest price for the item. Personally I am not a big fan of putting an item up for auction, chances are you won't get what you thought it was worth (as happened to me in the past - I ended up with less then I spent for it )! You can always set a 'reserve price' but that costs a bit more if I am correct.

There have been sold a lot of older Tenyo items over the last few months so prices have lowered quite a bit for some.

As we have discussed previously the pool of buyers for Tenyo collectables is so low that it can never stabalize. This is not gold we are talking about, it's a tiny nich of a tiny niche of a tiny niche. Therefore a few peopel can literally influence the market ebb and flow.
Imagine if you coudl buy enough gold to sway the overall price of it... that IS the case with Tenyo. If you went on a little spending spree and purchased 4-5 higher end items on eBay you would see the market swing as observers tried to jump in on it... then of course the market gets flooded and the prices drop like rocks.

I got mine brand new in original packaging for $210 three months ago. I love it.

Depending on one being a collector or want to have some fun with each of these small marvelous designs. I personally couldn't wait to open up the Tenyo I bought and feel first hand the love the designers put into these.

I recently purchased Ninja Experiment on E-bay. It's a great piece of mini magic!