I'm already experimenting with his using "invites" active members can give away. They allow your friends/etc to try out WIP free of charge for a certain time period.

That’s a good reminder. I actually noticed that and I still have one invite left. Let’s see who I want to invite.

With regards to doubt about the value of WIP: I stand behind the pricing

I’m glad to hear that :)

but I think it's the type of product you need to experience before you truly understand the value.

Indeed it is.