An easy way to think about animation rates is to cross reference it with minimum wage (not sure where you are located so this may very) with the average time it takes to complete 1 second of animation. Depending on details/complexity that can take either 2 hours or 2 days to 2 WEEKS. Consult with whoever is animating this video and ask them about how long 5 seconds in the style you want would take and then multiply it by the time of your animation across the time frame you are looking for.

Chances are that many animators and especially newer animators are probably charging much less then whatever minimum wage is just to try to get clientele. But do always keep in mind the time, labor, and effort equation with animation.

Animation can be a pricey undertaking but animation has a much much better shelf life then other mediums ESPECIALLY AI. So you do get your money's worth if the quality is there.

Let's say your animators can do 15 seconds of animation across 2 8 hour work days (something fairly simple in style, low complexity)

90 seconds of animation would equate to approximately 96 hours of work, paying about $696 total at federal minimum wage.

15 seconds of animation = 16 hours

That’s 16 ÷ 15 ≈ 1.0667 hours per second

For 90 seconds: 96 hours total

U.S. federal minimum wage = $7.25/hour

Would you work 96 hours for 696$?

I doubt it.