Don't be stupid and purchase the new shiny in game item known as the research accelerator. You are spending 100 gold for 200exp.
Guess what? You can trade 1 gold for 25exp. Do the simple math, it isn't that difficult. Then again, seeing how some people play I shouldn't be surprised. That being said this new item is probably the future of free exp meaning the nice trade in system could be nerfed or removed. Or just another item to be ignored and no changes will come.
Edited by Morphman11, 26 October 2018 - 04:45 PM.