It will be backdated to the date your baby was born, unlike child benefit which will only be backdated 12 weeks. If its your first time claiming, it can take a little while-we were waiting about 6 weeks I think for our first claim to come through.
1 It charges from a little more than $20-$100 for a neck brace for whiplash. It charges about $15-$250 for a neck brace for herniatic disc.  According to a Medscape.com primer on neck braces , a soft cervical collar brace made of foam rubber costs about $50, while a hard cervical collar made of polyethylene costs about $60.
A brace can cost about $10 -$60 for an over-the-counter model -- or from $500-$2,000 or more for a custom-made brace. For example, FootSmart.com charges about $10-$60 for over-the-counter braces and supports for flat feet. MMAR Medical Group charges about $500 for a custom-made Richie Brace . Patients on a forum at HealthBoards.com report costs of $1,000-$2,000 for a custom made Arizona Brace .