I chanced upon the UHA Mikakuto Croquette Snack when I was looking for snacks to buy back to Singapore from Don Quijote during my previous Tokyo trip.
If you qualify for tax-free shopping (spend more than JP¥5,000), it is selling for JP¥138 (S$1.70). If not after 8% tax, it is JP¥149 (S$1.85).
Ichiran is a famous ramen chain from Japan. They have branches in Japan, Hong Kong, US and recently Taiwan. Most of their stores are opened 24 hours daily. I hope they will come to Singapore soon!