luisHK, I have just called J.P. Morgan Asset Management and found out the following information: 1. all money funds incurs no charge, either buying or selling. 2. no fee for wiring money in or out. no minimal balance requirement. no limit on number of times you switch in or out. but when you buy or sell a money fund, the amount has to be US$1,000 or more. 3. the client's account are held by HSBC as custodian accounts, should be very safe. Hope this is useful.