Thanks for taking time out to respond to my question here.
I am familiar with the concept of Currency events and how to set them however, I wasn't sure how this can be done via DTM. Your example is very helpful and I did something on similar lines but it can't be as easy as setting up it directly on the custom code editor. We need to build the condition to fire and also fetch the values dynamically which would be the dollar value in this case. Any thoughts or examples ..??