they are the spx. you thinking the gold spx.. if you break down all those cost of buying the single cards , should work out to be cheare.. to understand where they are worht it. below is very rough guessitmate. Delisted players go for 20 dollars still on average, although you can pick them up a little cheaper sometimes
Luke Hodge DS1 $60 to $90
Luke Ball DS2 $25 to $40
Chris Judd DS3 $100 to $130
Graham Polak DS4 $20 to $35
Xavier Clarke DS5 $25 to $40
Ashley Sampi DS6 $20 to $35
David Hale DS7 - $20 - $40
James Bartel DS8 - $80 to $110
Luke Molan DS9 - $20
Sam Power DS10 - $20 to $40
Richard Cole DS11 - $25
Brent Reilly DS12 - $25 to $45
Nick Dal Santo DS13 - $40 to $60
Ashley Watson DS14 - $20
Barry Brooks DS15 -$20
Rick Ladson DS16 - $25 to $40
So at top value if you sold the cards indivdual it adds up to 790s.. but that is a very optimistic price and i doubt you would get that..
and at low it is 500 bucks. the best thing to do is buy it and sell it all off except judd or hodge and then you get them for cheap, but that is abit of a hassle for one or two cards. but you could effectively get judd for nothing, thats what i would do.. and gradually pick up the other DRS for cheap.. to complete set..