Get yourself to the dry ski slope at Hillend and have a shot
if you like it, then there's loads of kit around.
There's a lot of 'fashion' in ski wear, so any of the major retailers will have sales.
Lidl's/Aldi's stuff is really good, especially for the money, I'm told.
Boots, poles and skiis can often be picked up second hand, but if you're going to do cross country might be better to buy your own boots. Lot of hire stuff gets sold on annually.
Monarch teaches skiing in Wintertime on the Gorm, pm him, he's sound and he's most likely to know who's selling off kit.
cheers,
M