50_dollar_bag
Imitation Louis Vuitton
hammer decay starts after 50 turns for buildings, and never starts for wonders.
Hammers apparently do decay for National Wonders, I tried this last night on an Emporer/Marathon Fractal map as Huyana Capac. I'd cleaned out my continent and was quite far behind in techs because my trading partners were Tokugawa
and Isabella. Izzy wouldn't trade with me because I'd been showing her my Quecha's since about 3000BC, and Toku is just Toku. The rest of the world was revealed to be Mansa and Victoria who up all visible techs and Shaka and Monty who we're slightly more advanced but unwilling to trade. Teching took a while to gain momentum so with no need to build military and my core cities up to date with buildings I gave this a go. I built the Hermitage about 5 times over and got between 750-800 gold for each failed attempt, i did notice that a few of the cities which had built it to 1 turn to completion eventually showed 2 turns after about 100 turns, so decay does occur.
It did save my ass from a sneak attack from Monty as I let the Hermitage complete and the refund gave my enough money to upgrade some troops, about 5 times more than a turn of 0% science.


.