Limex is a cheaper product for just calcium but the one advantage is has is the nitrogen and other elements which will be beneficial to the soil and crop. Look up what it contains. I had it spread with a 4t Kidd belt spreader but it does bridge a bit in the hopper if damp. Mine was a back load from Newark and stored undercover in a silage clamp and loaded into spreader from there. Mostly spread on top of growing crops. I use it because of the elements as much as the calcium.
Just to set the record straight, there is NO nitrogen in Limex. Nutrient value is already mentioned in post #10. Highest nutrient content being 1% P2O5 !!!
Its not cheaper for Calcium if it costs you more to get it there though. How much calcium is in it by the way??