As Ron said macro/close-up performance vary wildly with P&S cameras. Even the firmware revision can make a difference.
Do you research online and narrow your choices down. If there is a decent local camera store that will take the time to let you do some hands on testing that would be great.
Checking the EXIF data on photos online can often reveal what camera was used. You'd be surprised at the number of stunning close-up/macro photos that are taken with P&S cameras.