I’m only really familiar with David Blaine, but I’m afraid even the slightest digging reveales that there isn’t a huge amount to his tricks
Many of his street illusions can be bought online. They are just simple props
When he levitates in his tv special (the one that made him famous) – he was hoisted up by a crane, and the hoist thing was removed in the editing suite
Magic is disappointed if you start digging
And don’t get me started on derren brown (gets v cross just thinking about the lottery numbers thing)