That's naughty.
if they are fan made (I can't see Frontier offering silk print, maybe someone with a poster from Frontier could expand on this) then they are not to be sold at a profit (I have asked Ashley about this for my own reasons)
If they are prints from Frontier, that were bought from Frontier, and put on Amazon as 2nd hand goods, then maybe that's OK, but it's really not for me to say, that's one for Ashley or Micheal to comment on.
if they are fan made (I can't see Frontier offering silk print, maybe someone with a poster from Frontier could expand on this) then they are not to be sold at a profit (I have asked Ashley about this for my own reasons)
If they are prints from Frontier, that were bought from Frontier, and put on Amazon as 2nd hand goods, then maybe that's OK, but it's really not for me to say, that's one for Ashley or Micheal to comment on.