I mean the analysis similar in price of 5L of oil.. it's not expensive, but I kind of agree.. what do you do if the results are bad? I guess depending on what it is some people could consider tearing it apart and rebuilding (if for instance there are signs of worn rod bearings or something) that certainly would be the cheaper option than having your engine seize up on you (although the likely hood of being able to gauge the life expectancy even with the report would be very difficult)
I've used their lab one time and it on a 2013 FRS that I rebuilt the motor on, and they were notorious for getting clocked with loose silicone/gasket from the front cover, so after 700 miles I had them run a test to evaluate the silicone contents in the oil which came back below acceptable average. More for a piece of mind.. in my case, if I had elevated silicone gasket contents, you better believe it would have come right back out lol. but we're also talking a 20k mile sports engine, vs our 200k mile average rigs.