I took class with Eric Grauffel. There will be 2 teachers- Eric and his dad. Eric looks dryfire, and his dad is for shooting. I took class 1 and 2 and a litle of class 3(you can look what techniques it will be in his web site). It was 2 day class, we shot abuot 900 rounds a day. You shouldn't expect any super-duper techniques, but you can get those little things that are unique from World Champ. Erics courses consist of three main things: 1. Accuracy-you can't shoot any deltas. If you do that you loose one magazine(you are using 4 of them) and if you shoot poorly you will be without mag and you will look what others do sitting "in the corner". 2. Technique- there Eric will show main techniques with those little things which you will get only from Worl Champ. 3. Tactics- if you will have chances to shoot some stages you will see and learn some interesting points, beginning from hit factor calculations and ending which target to shoot first or last also deppending from surfaces on shooting bay.
In the end- I don't know is it worth to spend 1500USD, because you have a lot of good shooters and teachers in your country, but for me it was very informative(we were group of 10 shooters and it cost less for us and i was shooting about an year). We have Eric Grauffel courses here in Lithuania for 2 years and a little example is Europeans- shooters from our country in Europeans 2004 was somwhere in 130 place and this year in Europeans they were in 35-39 places.
By the way if you will go to those courses-ask questions- it will all be answered, and by the way they like that and will give you more.