It depends on how much you reload and what you are reloading. I think it is well worth the price, and I don't think it's over the top at all. I currently reload for all of my rifles, revolvers, and pistols that use all types of powders. Some powders meter well and other don't at all.
Previously, I was just using an RCBP electronic scale and powder drop. The chargemaster, or anything like it, simply wasn't around. For example, I usually load 50 rifle rounds at a time. Procedure-drop powder charge, weigh, add or subtract, on to next charge. Depending on the powder used, this was a time consuming and laborious task.
The chargemaster changed that. Even with hard to meter extruded powders, it rarely missed a charge. If it did, it went high a tenth or two, so I removed a couple of granules. In a recent reloading session loading 30.06 with IMR 4350, there were only 2 misses in 50.
I will never go back! I've had it now for 3-4 years and don't even remember what I paid for it and don't care. It really is a time and labor saver.