hi
i a blender master, who will do this work alone, 30-60 seconds is not that much with the right storyboards executed and concept arts, can very well do this job same quality as the youtube links, i can rough sketch the animatic , rough 2d animated for starting concept of the the whole 30-60 seconds, then will 3d after you approve the full concept,very serious on my bid and will surely deliver quality work :) , pls check my freelancer portfolio for preview. # "all asset i will do for this project will be done inside blender within 2 months or 1 month solo work :)"
regards
arthur :)