Extremely disappointed with the Treasure Hunt event

I completed the event this morning.

I use 2000 simoleons to dig one hole quite often, I would say half of the times. Don't spend 5000, I agree it's not worth it.

I also play a lot, doing 3 llama zoom per day and the special events multiple times per day. So I collect more ancient coins and I raise a lot of simoleons. 

This type of event is not so much resource consuming, if you have time to play.