Okay, We'll skip the "it's not a sex site" lecture, some people just don't seem to get it. Let's go with your point of view - You paid $30 to see some sex.
That brings up 2 questions:
How much sex do you consider worth $30?
How much sex are they having?
For the sake of this argument, let's say I'd be willing to pay $1 to see one of the couples having sex. Therefore I should expect to see sex 30 times a month to get my money's worth.
We have 7 couples here, 8 if you count Alma's guests. That means that all the couples need to have sex at least 4 times a month to make their "quota", making that once a week average.
Now, how many times have they had sex? I don't keep track, but I'm sure there's a few OCD's on here that have their little tally sheet.
So how much sex is worth your hard-earned dollar? If they aren't having enough sex for you, then don't subscribe. If they are, then quit complaining & enjoy it.