A few questions about CGM

So 2 weeks ago i was diagnosed with type 1. I am sick of doing 10+ pricks per day, so have looked into getting a dexcom g4. Still have a few questions, hopefully you can help! Fist of all i live in the uk and if i buy from a place called advanced therapeuitcs, itll cost £975 for receiver and transmitter, and £250 for 4 sensors. Does anyone know where/how i could get it cheaper? Also is it uncomfortable to wear/sleep in? Obviously £1000+ is alot, is it worth it? Would you recommend? Also iveonly had diabetes for 2 weeks, is it too early ro get one?Thanks,