How much does a human eyeball weigh? According to some sources, the average human eyeball weighs approximately one ounce. Other sources quote a figure of only 7.5 to 8 grams (0.3 ounce). Based on a total volume oâ¦f 6.5 milliliters, the lower figure seems more accurate.
Prices run from a low of about $15 for 25 feet of 1/2-inch conduit to $80 or more for the same length of 2-inch conduit. Rigid nonmetallic conduit is made of PVC, and working with it is similar to working with PVC plumbing pipe.
Invisalign Costs a Comparable Amount. The cost of Invisalign is not much different from that of metal braces. Invisalign is considered more attractive during treatment, because it uses transparent trays. This proprietary method costs $3,500 to $8,000, with a national average of $5,000.