1 Belt balancer (first recipe) costs 62.5 iron ore and 22.5 copper ore.
2 Belt balancer (2nd recipe) costs 112.5 iron ore and 22.5 copper ore for 56.25 iron ore and 12.25 copper per belt balancer.
3 Belt balancer (3rd recipe) costs 227 iron ore, 75 copper ore , 15 coal, 100 lubrication and 300 petroleum gas for 75.66 iron ore, 25 copper ore, 5 coal, 33.33 lubrication and 100 petroleum gas per belt balancer.
The recipe cost for the 2nd recipe is fine, as you get a discount for the extra fabrication steps involved, but the 3rd recipe absolutely needs to be reworked.