Heli-Kraft has a nice deal at this moment:
Combo A: Raptor 30 V2 TH4839-K21 kit + TTPRO-39H(R) engine + muffler + 49BB + 550 mm FRP glass blades and shipping included at USD 380.00
Combo B: Raptor 30 V2 TH4839-K20 kit + OS32SX-H engine + muffler + 49BB + 550 mm FRP glass blades and shipping included at USD 440.00
ARF: TH4839-A11 Raptor 30 V2 ARF with TTPRO-39H(R) engine + 49BB USD 335.00
Electronics are also very cheap at heli-kraft.
I always prefer a kit over a ARF, because when you have a crash you will know where the parts have to go. So it is easier to build up after a crash.