overshop

From over- +‎ shop.

overshop (third-person singular simple present overshops, present participle overshopping, simple past and past participle overshopped)

1. (intransitive) To spend too much time or money shopping.
   • 2008, April Lane Benson, To Buy Or Not to Buy: Why We Overshop and How to Stop:

     Joanne came to the realization that she overshops to feel more attractive and to reward herself for doing the professional work she so often finds tedious.