New estimates from iSuppli suggest the 16GB, non-3G iPad carries a Bill of Materials (BOM) cost of just $219, with manufacturing costs estimated to be $10, bringing the total cost of the low-end machine to $229. According to the report, the mid-range version of the iPad, with 32GB of memory and 3G wireless capabilities, will carry a BOM of roughly $276, making it the most profitable member of the family on a percentage basis. iSuppli believes that…