There's a big difference between Racing Clubs like Elite and syndicates. You can't compare the two. There's also a big difference between syndicates in which the share in the horse is leased, and those where members buy and own a share in a horse.
Membership of Elite even in the first year is less than £400, and goes down thereafter, even before a share of the prize money, so it's very good value for 20+ horses to follow mainly with top trainers; and as the Club emphasises, the main benefit is the weekly newsletter. I've been told by someone who works for Elite in a managerial position that it took Tony nine years of investment before he finally got into profit - there is quite a big breeding operation included which makes it very different from other clubs and syndicates. Yes he IS now making money from his massive investment - but it might never have happened... and has happened mainly because the home-breds have outperformed the purchased horses, by quite a margin.
I'm no longer a member by the way; I just wanted to put the record straight, as what was said above is very misleading. Elite bears no resemblance to lease-based operations like, say, Diamond Racing, Henry Ponsonby's syndicates, or Pat Eddery Racing.
Elite does run a separate syndicate-based operation which has horses with a number of trainers [inc several which don't train for the Club]; this is called Axom and they work with 12 shares per horse. The cost varies according to the price of the horse; these are their terms - and as you can see they cover every available contingency:
http://www.axom.co.uk/termsandconditions.htm
Most lease-based syndicates are quite expensive for what you get imo, but they all operate slightly differently and it's a good idea to shop around for the best deal. There are yards running mainly syndicated horses for groups of c12 owners, which are excellent, eg Clive Clive Cox and Bill Ratcliffe, both of whom charge fairly and have very good win/place ratios to runs; and others I'd not touch with a barge pole. There are also huge well-established syndicates like Million In Mind which work very well by buying a better class of horse; these are always sold at the end of their first season.
People going into syndicates have to realise that the management has to cost in the likelihood of vets' bills, and they carry all the 'additional' expenses like boxing, shoeing, and entries, jockey's fees etc etc ON TOP OF the training fees. All these things add up. I've belonged to four syndicates of various sizes and to three or four different Racing Clubs, so I do have a bit of experience in these things!
I certainly wouldn't buy into a set-up which is paying a cleb for endorsements, that would set all my alarm bells ringing! I'd also add that going into an open-ended ownership syndicate with people you barely know is asking for trouble. The on-going saga of problems in one syndicate I know of with a well-known horse is a case in point.....
If you do get involved with unknown people, it's best to have a 'one season' leasehold arrangement, at least for your first foray - and pref with a set-up which has been personally recommended.