The zone pass for $500 is prob a good start to see if you like TT. The parks may not be to your liking, nor the reservation system. Then if it works for you go get a used full membership for the whole US. We've been members for at least 10 years, stay primarily in Calif at our favorite TT parks for 2 weeks at a time but we can go to another one the same day for another 2 weeks if we want. Other memberships may vary depending on orig cost. I like the idea of pulling in and picking our own site, no specific site reservations. That way if we find another thats quieter or bigger we just pack up and move. Some others like to check in and have a specific site, like most commercial parks do. My dues yearly are about the same as a single zone membership cost but we have a few other benefits, the whole country, longer advance res's, etc. As others have said, you have to use it enough to make it pay. We never use the 50 free nights I'm entitled to but it's still a bargain for me.