The Effect
A banknote, or even a large value cheque, is securely locked into a clear plastic frame with WONDERLOCK. The lock will only open with one of the five keys supplied. This can be demonstrated before snapping the lock shut if required. The keys are handed out to random audience members, keeping any key back for the performer. The keys are then tried in the lock by the audience members with keys. AT ANY TIME the key kept back for the performer can be exchanged. Even so, after all the audience’s keys have been tried and will not open the lock, the performer’s key WILL OPEN IT!
Cost
£ 39.99 www.magicshop.co.uk
Difficulty
1=easy to do
Review
This is a great opening trick because it gets peoples attention straight away as there is money involved. I received this trick yesterday and was performing it at work about an hour later. I could not find any faults with this trick and I would recommend it to anyone who has £40 burning in their pocket. Definitely a trick I will be keeping in my routine

Overall
A classic in magic 10/10