just bought some from true value for a buck a piece, galvanized steel and about 8'' long 1/2'' wide. need to drill holes in top to allow rope to pass through and anchor. weight? kinda crazy all this weight talk.... guess it all adds up. mine will be for just in case though and only to cover me if needed in my one man tent. my tents a msr hubba but still you never know..... good luck.
With my Supertarp I generally run 4 of the Coughlans ($3-$4) at the four corners and Vargo titanium stakes everywhere else if I expect rough weather. Otherwise the titanium stakes work just fine.
I will probably be trying some of the Easton Full Metal Jacket stakes shortly, supposedly hold well, definitely light....and expensive.