Depends on the stone and the region you're in. Start at $20.00 a yard and go up from there. Most will be in the $30.00 - $35.00 per yard range.
$499
Depends how much damage has been done, the type of stone, how big it is, etc.
Rosetta Stone French, Level 1, retails for approximately US $179.00 at online stores. Rosetta Stone French, Level 1-3 Set, retails for approximatley US $399.00 at online stores.
small round-$22 Large Round-$30