I just tried for myself. I tared a measuring beaker, then tipped in 500ml of plain white flour. It weighed 374g, or 187g per cup. That's quite a bit more than the standard values, that range from 125 to 150g. When compacted by tapping it vigorously on the bench, the volume went down to 450ml (10% compaction). â
Prefab Fireplace: $1,500-9,000. If you are looking for a fireplace with a fairly substantial look, but aren't ready to pay a skilled mason to build one from scratch, then a prefab model is right for you. A majority of prefab fireplaces are made of reinforced concrete and equipped to burn natural gas or propane.
1 A natural stone fireplace might cost $2,500 to $3,500, while a stone veneer fireplace costs about 25% less (or $1,875 to $2,625).  If you plan on using gas burning logs in the fireplace, add $750 to $1,000 for a gas log kit.