Christmas Sale - Miles + Money discounts?

Noticed today that the Virgin Atlantic Xmas/New Year sale appears to have started. Have been looking at flights to NYC for a while and have been waiting for this sale!
Was looking to book using Miles + Money but these fares have not changed - is this normally what happens during a sale? They are now only marginally cheaper than if I don't use any miles.
Many thanks for your help, have been browsing the forum for a while and it's been an invaluable resource!
Was looking to book using Miles + Money but these fares have not changed - is this normally what happens during a sale? They are now only marginally cheaper than if I don't use any miles.
Many thanks for your help, have been browsing the forum for a while and it's been an invaluable resource!