Came across a box full of old Japanese MSX games

It's a nice surprise collection. I'm sure several people will be interested in those games if you would like to sell them, especially if the games are complete (box and manual).

I am in the U.S. and typically can't find games without having to import. There are a few in that lot I don't have, and I'd be interested if the price is fair. TheClash603@yahoo.com is my email if you want to shoot over an idea of what you are looking to get for the lot.

Alternatively, if you start auctions on eBay at $1 and let them run for a week, you should get the market value. That's the easiest way to sell something if you don't know the price. Also it is a much safer avenue for the buyer, than a forum post. That safety may be best for both parties, as it could get you a higher amount. Just make sure to put MSX and the correct name of the game in the auction title and you will be all set.

3. Alice's Adventure in Wonderland
4. (Yes)
5. Tricky
7. (Yes)
12. (Yes)
16. Adventure of a small cat - Chibi goes on adventure
17. Magical Kid Wiz

Your sister-in-law was really lucky to enjoy those games back in the day

7 is not Jajamaru-kun which is a different game, it is "Ninja Kun"
10 is "King's Knight"

On ebay, you should list whether it has an instruction manual inside the box or not, and whether it is a tape game or cartridge.

nah generally cartridge games are in more demand.. ofcourse not every game was released on cartridge though.

Tapegames take 5~10 minutes to load or something like that.