Without that plugin you need to spend lot of time importihg one by one image.
FW Gallery is a free and complete solution for Joomla photo gallery. It includes all features that are necessary for creation and further managing your gallery.
FW Gallery Batch Upload is an extra plugin that extends its functionality and is available for a small fee. We do not include it in the component allowing our customers to choose themselves what FW Gallery configuration will be the most suitable for them.