The dropped coins at Tesla Legacy

Hello. Before I go through this part AGAIN (I die a LOT) can anyone tell me how important these coins are. I know these coins are important to Tex, since he is always having hardships, but are they needed? It seems the game saves things most of the time, and the one time I died it didn't save the coins in my inventory. I thought about using the coins, SPOILER to distract the Morlock in a second floor lounge but they weren't there! Now, I have to go back and redo that whole part I noticed I couldn't save locations in the Sesen underground, either. It did save my inventory, except when I got killed after seeing the last parts for Bauer's location. Do I need those coins?? Thank you.
Yes you need the coins to get something out of a vending machine.
Samantha


Once you start down the dark path, forever will it dominate your destiny.