<Wow that is amazing to me what these computerized mills are capable of...There is a lot of waste on those billet chunks though...I bet the local metal recycle center pays good for those grindings. >
There are a number of variable involved in how much $$ Charlie might get back for his aluminum chips. Yes he laid out $1000 for the block of aluminum, but depending on the quality of the aluminum he wants to use depends on if he needs certs for the material or not. With out the metal is cheaper to buy.
The scrap dealer pays by the pound and by the qality of the chips, how clean vs oily.
Also pricing is based on how much weight of chips, less than 100 lbs price is lower and so on.