There's basically 3 areas around there that get cheaper as you go East..
Muswell Hill to the west of the railway tracks is pricey.
The Ladder between the railway tracks and Green Lanes. Cheaper than Muswell Hill but you're still looking at ~£900k for a house (cheaper on the two main roads but they have loads of traffic).
East of Green Lanes, houses are bit smaller, area is nice enough, houses are about £200k cheaper (bit pricier south of St Ann's Rd than north).
The Muswell Hill/Crouch End prices have meant people have gradually moved across and coffee shops and organic stores are starting to flourish. Property prices will probably follow soon.