We have a couple of those, and they retain extremely well. We have Bitesex.com (exclusive content) and Piercednpretty.com , these two are converting like mad, so me members have been there since last December when we opened the damn things, they love it!!
See our
Portfolio here.
We also have Smokingwife.com , all exclusive, mature, amateur, smoking, dildo, this one fits into a ton of categories, it's new and fresh and is converting really well.