Did you go for the bundle package? I bought mine without the sensors for £180 with the 10% BC discount at
CRC.
I dont really need a cadence or heartbeat sensor. The Speed sensor i might pick up separately at a later date pre-owned as it costs about £26-30 brand new at the moment.
I hope you enjoy your 520 as much as i have so far, Ive had mine about a week and there are so many features on this thing it seems almost wasted on me who wont use close to half of it lol.