i rnquired about this recently, apparently they have some stuff which exclusive to the store, some which is exclusive to the catalogue and some stiff which is in both!
if you go into the store you can order stuff from the catalogue without having to pay £3.95 and get it delivered to the shop - hope that helps
Next ordering is ghey. You have to remember your customer number or some ****e. WHereas every other place on the net has a username/email address login. It took me 3 months for them to finally send my number through, by which time, I was over them.
I only order from the online site in-store. No shipping fees, no ghey catalogue.
That said there's a free delivery coe for next floating sround - check out hotukdeals.com