Many of the performers from the livejas are also registered at other cam sites too so people could get pvts there and post them as recorded at livejas.
However, maybe really there is a way but I don't know it.
On the other side, I have my own way of getting lj pvt and if anyone of you is spending hundreds of credits every month for pvts there feel free to send me an e-mail so maybe we can make something for lowering the cost significantly
p.s.
I am not talking about exchanging of the videos...