The price for Thailand seems quite high to me. I may be wrong but I would recommend calling pharmacies there as opposed to clinics. Good luck.

This can actually get you into serious legal trouble if you’re working internationally. Really watch yourself with this.

There’s no radiation issues, its not even a concern. It’s rather affordable at the moment with how low the yen is (151 to 1USD). That said, accommodation can add up as it’s hard to rent a place with a tourist visa but food is phenomenally delicious and shockingly cheap for the quality.