I poked around iBerleezy's channel and couldn't find anywhere in his "About Me" or "Video Descriptions" as to what editor's he uses. But I can give you some price ranges and possible ones that he may use. But keep in mind the Video Editor is simply a tool for the end result of the video. Like 2 different paint brushes. Both are made for the same reason but can create different or same results depending on who's holding it.
Adobe Premier Pro CC: $19.99 (Per Month) or $50+ for all Adobe Programs.
Sony Vegas Pro 15: $449
Vegas Pro Edit: $299 (Cheaper version of Pro 15.)
Final Cut Pro X: $299
Pinacle Studio: $129.95
Cyberlink Power Director: $59.99 (If Vegas and Premier are overkill for your video editing needs)
And I could go on and on and on. But those are basically some of the best editors out there. Of course convert the currency to wherever you currently live. But an editor is just a tool to the end product. So use what's within your budget and what works for you. Most of these have 30 day trials so I'd recommend trying some out and seeing which one is best suited for you.
Hope that helps and be sure to have a wonderful day. =]