The "Part Store" is missing information about the weight of the "Bundle Packs" and parts sold. (e.g. the weight of the "V-Slot™ Mini V Linear Actuator Bundle" for any given length and profile.) The "Project Resources" also doesn't seem to contain such information.
this is not any inquiry for a specific list of parts for one build it's a bug report that some basic and readily available information is missing for everyone.