I use this simple formula:

Fisrt count the number of years Trump is in office, then multiply that by 0.5. Now multiply that by the price you would normally guess the cost to be.

So if Trump is in office for 5 years, and you think something should cost $20 it turns out to be:

(5*0.5)(20)=50

Making that thing that should only cost $20 actually cost $50