What are the costs?
Operating Expense Ratio (OER)
OERs are charged annually by the fund company, expressed as a percentage of a fund's average net assets. They cover the fund's management and other costs. 

Passively managed funds are designed to track a specific market index and typically have lower costs (OERs) than actively managed funds that pay fund managers or management teams to make ongoing decisions on where a fund's money is invested.
Load
When you purchase or redeem shares in certain load-based offshore mutual funds, some fund companies charge you this one-time commission to compensate the broker for the sale.
Transaction Fee
When you purchase or redeem an offshore mutual fund, your brokerage company may charge you a trade fee. This fee may also be used to compensate the brokerage in instances where it does not receive compensation from the fund.