Ok..well i have heard back from the UK distributors. Basically we get a 10% discount for 10 sets. More for 20-30 sets. Shipping is only £10. But...and its a big but...the collars are £180 plus vat each set. After discount this works out as £195.60 a set! According to Masa,its a worthwhile mod and could cure/limit the pulling to the left some cars have plus makes the chassis nice n rigid. Thoughts?