Yes it fits in the standard holster with the extended battery.
Here is the battery kit for verizon/cingular
http://store.bizshopr.com/rimacc-09125-002.html
Here is the tmo one
http://store.bizshopr.com/rim-acc-09125-003.html
and the Nextel one
http://store.bizshopr.com/rimrac5015.html
and the 7100t one
http://store.bizshopr.com/rimacc-07496-001.html
The 7100g, 7100i, 7130 and 8700 do not have extended kits as of yet.
Our prices are usually the best and we have them in stock.