I bought the 2 Anker 1800 maH batteries + universal charger package for silly money (about 22 euros, including shipping).
It was shipped from a company called "Fantasia Trading" or LaptopMate in the USA. Shipping costs were $5, that's very cheap for international shipping i think.
It took about a week to arrive in Holland, which is very acceptable considering the low shipping costs.
I first charged an Anker battery in the universal charger to 100%. Then i reset my battery stats in the recovery menu, shutdown my phone and replaced my orginal battery with the Anker battery.
Immediately, i noticed a vast improvement in battery life! About twice as good as the original battery!
My orginal battery obviously wasn't performing as it should have anymore, but an impressive performance of the Anker battery nonetheless.
I'm very pleased with these Anker batteries.