We went for it and just got back last night from an incredible week. Right off the bat, let me say if your kid's the next Lamine Yamal and you do this, he'll be spotted: the program is legit run by La Liga, with training by La Liga coaches, training sessions at Real Madrid, with Real Madrid coaches and training at Atletico with Atletico coaches, plus we played friendlies against the Rayo Vallecano and Atletico academies (and beat Atletico!).
But, your kid's not the next Lamine Yamal, so is worth if for the rest of us? Definitely, though don't sell a kidney to do it.
First, if it's a money grab, they're not grabbing much money. The cheapest you can do this is to send your kid unaccompanied (which some did) for $3k, plus flights. That $3k covered a lot: transport to and from airport, all accommodation, food, drinks and travel. Each team gets a chaperone, a La Liga coach, plus a shared physio (there's also chaperones for families). Each player also gets multiple kits: travel, training, game, Real training and Atletico training, backpack and puffer jacket. They also include tours of the Santiago Bernabeu and Riyadh Air Metropolitano stadiums, plus tickets to an Atletico Madrid game and to a Leganes game, and it was all organized very professionally.
Though I have questions in how players are scouted, the standard of soccer was good too (though not necessarily the very best of the best), with players from all over the US, Mexico and even Guam, but our La Liga coach was great, and we even pulled off a famous, backs against the wall win against the Atletico Madrid academy (lost the first two friendlies though).
But while soccer was the main concern, just hanging out with your kid during free time and exploring Madrid was worth the cost in itself. Priceless really. We built some real lifelong memories.
Downsides? Well, they initially said the kids would be staying at a residential sports school (ESC LaLiga), but that fell through shortly before the trip (which seemed a little bait and switchy at the time) and they moved the accommodation to a hostel in Madrid center. At the school, the kids would have had free reign, but because the hostel was public, the chaperones had to be with the kids all the time, which was a little constricting.
The flip side though was that the hostel was central (and the school wasn't) meaning we parents could pick up the kids during free time and go explore, which was actually one of the best parts of the trip.
Another downside was that Real Madrid and La Liga aren't best of friends right now (due to Real's complaints over referee bias), so Real were playing hard ball of over a few things, meaning parents couldn't attend the Real training, for example. Atletico, on the other hand, went above and beyond to make us all feel welcome.
But, overall, it was worth every penny. If you're kid loves soccer, it's a dream vacation, plus you get to hang out in Madrid, which is a beautiful, vibrant city with great food. And each kid gets an individual evaluation, with one or two lucky ones getting an all expenses paid invite to come back and spend a week on trial at a La Liga club (they'll hear back in a couple of weeks).
Don't put yourself into debt thinking this is chance your kid will be spotted by Real Madrid (next Lamine Yamal excluded), but for us, it was absolutely the right decision to go.