Well this is a PERSONAL opinion (but based on some experience anyway):
The ONE good thing: I looked at that same course (after buying all three books mind you) about four, possibly five, years ago (not sure but a good while ago) and it was nearly $6 000 back then!!!
That being said: after looking at the website after all of this time (today) it would appear that nothing has changed and I fail to see what MORE you're going to get out of the course than what is already detailed in the three books (and that's based on what's still on the website and in spite of what the website indicates).
There are a few threads around here on his trading systems and indicators and, unfortunately, you'll find most of them are not too complimentary.
The above being said and in all fairness: I tried the systems in the three books (well same system just different 'takes' really) and they didn't work for me on FOREX. I don't (very rarely anyway) trade FOREX anymore and I've never given the systems a second thought or applied them to trading equities. But let me say this: Bill Williams is (or was anyway) an equities trader (mainly although there are sparse examples of some FOREX trades in the three books). That's the impression I get anyway. Just bear that in mind. Equities 'move' differenty from FOREX (of that I'm sure anyway). Whether or not they (still???) work on equities??? I know not but I don't think that's why you're here (to trade equities I mean).
If you have that amount of capital available and want to trade FOREX: put it in a trading account (or save it for now) and look around here. Other than 'trader psychology' (which I don't believe can be learned from a book but Bill Williams puts in a fine effort anyway): everything you need you'll find right here for free. If you want to go the Bill Williams route: buy the books (dare I say FIRST???) (they're a fraction of the cost of the course) but bear in mind my PERSONAL notes above is all.
Then again (sorry if I'm sounding like an ANALYST here i.e. no 'straight answer'): take a look at the threads on the subject and PAPER-TRADE the systems. If they're profitable for YOU: 'go mad' as they say (and buy the course i.e. if nothing else you'll have a 'hotline' to them to ask them WHY the systems DO NOT work OR you can compliment them).