Should never buy a used suit, maybe if it’s been used very little & still looks in good shape. If you think firesuits are expensive check the pricing for staying in a burn ward
It may not be the fire that burns your skin so much as the heat boils the sweat lying on your skin. Burns are a very serious injury; your skin protects your body from many infections, take care of it. Use fire resistant underwear and be sure it’s the good stuff; a T-shirt just won't get it done.
