Raceline have sent there moulds back to Italy to be made there, so nothing till end of april, but their sister company has Speedlines (which are 2kg lighter).
I have some used 8x18 RL7s for sale, they area bit scrappy( track use, not showroom spec) but a good saving at only £100 each, can deliver to Glasgow/ Scotland next thurs ( driving rally car to Stranrar), or using them at Cadwell this friday.
New ones from Raceline or Compomotive are £150, or Speedlines at £175 all in.
hope this helps!
6 and 7 use same hubs, so offset should be the same.