In which type of banking transaction is price manipulation, as a form of money laundering, a common practice?

Redeeming an annuity is an insurance or investment product withdrawal that does not involve the invoicing of goods or services, providing no mechanism for trade-based price manipulation.

Wire transfers move funds electronically and directly, so they do not involve commercial invoicing where prices can be manipulated to disguise value transfer.

Letters of credit involve documented commercial transactions where goods can be systematically over-invoiced or under-invoiced to transfer value across borders - a technique classified as trade-based money laundering. The complexity of international trade documentation and the volume of transactions make price discrepancies difficult to detect, making letters of credit a preferred exploitation vehicle.

A cash management account is a treasury liquidity product with no connection to the pricing of international goods shipments, making price manipulation inapplicable.