How is the weather where you are? We've been having some gloomy weather--clouds, winds and rain. Being from Hawaii, I really think I need some sun to generate energy within myself.
Anyway, we saw this eclair on a television program. This eclair has custard and whipped cream. It is called the W cream eclair...and it is only 150 yen (about US$1.50). It isn't too sweet, probably from the dark chocolate on the outside.
If you are in Japan, you can find it at Family Mart. Be warned though, it is quite popular and I've heard that some Family Marts have sold out.