Hello!
I noticed with the update today, that the gold refunded for composite towers and elemental towers is inconsistent from mode to mode.
I.E. On hard mode, one can sell composite AND elemental towers (basic or upgraded) for 100% return.
This allows profit per interest period if sold. I only mention it here because I am aware that a past update had changed it to 98% to account for interest.
On insane mode composite refund was at the proper 98%, not sure about elemental towers.
Good day,
wnxxgu