Rollers are cheapest @ $20-40 a set .....Adige and DR Pulley sets go for $50-70 a set.The weights you choose depend on many things, including your weight and where and how you ride.....the heavier you are, the lighter the weights you want to use.the faster you want to accelerate from a stop, the lighter the weights you want to use.the steeper the hills you need to climb, the lighter the weights yo