First of all:
approves.Second of all, you can't really offer cash to people who have the episodes you're looking for. That would constitute the sale of someone else's copyrighted work, and it's generally a bunch of nastiness.
A lot of people on this board have tape collections (quite a few of them have thousands of tapes, actually). If anyone here is inclined to help you, they'll let you know they have the episode, and you can work it out with them from there.
Welcome to the board, and good luck finding your episodes.