For international shipping, the best 2 sites are:
1. Midwifery Supplies Canada:
Bacteriostatic Water for Injection 30mL | Hospira Pfizer
2. Medex Supply:
Bacteriostatic Water for Injection 30mL Sterile 25/Case
I prefer Midwifery Supplies Canada because they’re the cheapest on the market and they have options of 1, 5, or 25 bottles. Meanwhile Medex only sells cases of 25. Both do international shipping. I know Midwifery refunds your order cost (minus shipping) if your country’s customs return the package.