Since $ Investments in Lego are determined by price AND quantity of units purchased, comparing % Growth or even % CAGR across different priced sets is not always the best indicator of where you should place your investments. Why? Because the leverage of that x% changes based on the denominator. 100% Growth on a $10 unit will net you $10, whereas 100% Growth on $100 will net you 10x the amount. The #1 KEY FACTOR is expected rate of INVENTORY TURNOVER, relative to your expected CAGR. If 10 units x $10 ea. grow at 100% in half the amount of time it takes 1 unit x $100 ea. to grow at 100%, then you will obviously have the ability to make more with the lower priced units, and vice versa.
Why does inventory turnover matter? Because you value your time. % Growth per Annum is a very attractive statistic, but none of us live forever, so the 'A' in CAGR becomes important. At the Age of 64, Ed has fewer 'Annuals' left in his lifetime than some college kids saving up for the next keg party. The ultimate goal is to generate the biggest bankroll of cash in the shortest amount of time. What Ed points out is that these higher priced units have a MUCH HIGHER rate of inventory turnover, later in their lives...meaning in 2-4 years from now, Haunted House could turnover 10x per year at 100%, whereas if you were to instead have invested that $ in, say, Avenging Cycle's at $10 per unit, it could possibly take several years to turnover enough units to generate enough profit that those Haunted House's brought in just one year.
This is just in example, and everyone's valuations will differ slightly, but the principles remain the same. Get the idea? 2 items with equal CAGR will not necessarily have the same RATE of INVENTORY TURNOVER. More importantly, how does the rate of inventory turnover change, as the desired CAGR changes? Could it be possible that cutting your Expected CAGR in half could triple the rate at which your inventory turns over? Thus, when comparing LEGO investments between forum members, opinions will always VARY, based on your Expected CAGR, Expected Rate of Inventory Turnover, and the number of Annuals you expect to have left in your working lifetime.