I bought a pillow for 997 yen ($9.77 €7.07) at Seiyu. I also bought a pillow cover with it. It cost 300 yen ($2.94 €2.13). My son uses them.
Micro SD Card = 780 yen ($7.65 €5.53)
I bought a micro SD card for my wife at Yamada Denki. She uses it as the memory of her cell phone. It cost 780 yen ($7.65 €5.53).
Retail price of major products in Tokyo (2014 March)