AmazonBasics Charger w/intl plugs and 4 AA LSD rechargeables for $8 total
Amazon is offering the AmazonBasics 4-slot Charger with 4 AA rechargeable batteries of the LSD (low self discharge) kind for around $8. They include international charging adapters. Shipping is free if you are a Prime member or if the total of your order is $25+. This is a live/organic price, which means it may (or may not) change at any time. Limit five per customer.
Be sure to read the customer reviews if you are not familiar with these. This appears to be better suited to charge secondary equipment, not the high-drain stuff that are probably better suited for Eneloops and smart chargers. However, with a price of $8 that includes 4 batteries and a charger, you can find plenty of other uses for them.