At the expo what kind of t's will be available ? And how will the prises be good medium or bad ?

Dasie, it all depends what is available. Normally there is something of everything, from big to small. Prices (depends at which stand you buy) are very good, way better than pet shops.

Here is a tip for you

The first day has all the nice Ts rare ts as most people sell them off first
The secound day the prices drop to clear the stock before home time

so its a catch 22 ..

There mite be more Ts than snakes more roaches than people
its a pot luck all depends whos there to sell what ..