This is going to sound like I'm on the payroll at R2P or something, but I'm not. That out of the way, I'd like to say that
there is no need to pay for anything on R2P. You can join the community and race there for free. The most important thing (as I see it) is the sign up feature. Paying members will always have dibs on the slots available, come race day. If the series has room for 20 drivers, and all those slots are taken in advance by non paying members, a paying member will push one of the non paying members off the list, simple as that.
The rest of the features, like teams and more detailed stats are perhaps not as important, and lets face it, we all have our setups saved on the harddrive and so on, and screenshots are mostly posted on the teams own site etc. But still, the price to be a supporting member is as low as $8 per month, and if you ask me, it's a small fee for such an extensive service. I race not only LFS, but also rFactor, GTR Evolution, STCC - The Game and Race 07, and I will very soon be the proud owner of Turismo Carretera. Race2Play offers fast and reliable servers for all these Sims. They offer online stewards that is there, online, in real time to overlook the event and maintain a VERY high standard of racing. That means no more first turn mayhem like on (some of) the CTRA servers and all of the public servers. And all the stats, results and rankings are saved, updated kept forever, in real time. That's got to be worth something.
iRacing is crap in comparison. iRacing charge a monthly fee as well as for add on material like tracks and cars. If you're involved and successful in iRacing, you will by now have payed enough money to equal several years of a R2P membership, just to cover the cost of add on tracks and cars and not even counting the monthly fee for the series itself. Just not worth it. And... Given the history about how iRacing treats members if the sim racing community
http://forum.tmcarthur.net/viewtopic.php?t=52 I wouldn't install that sim out of pure principal reasons, regardless of cost. But that's just me.