Welcome Lady Grace, I'm new here too and I feel your excitement for stampin' as I call it. I've managed a pretty large load of stamps in a short time buy keeping a watchful eye on
eBay. Certain dealers offer pretty good lots although almost all take out the really expensive ones. If your collecting theme based stuff I would suggest finding the country that has a lot of your favorites and looking for that country as a lot and looking through its pics to see if any meet your likes. .. I'm gonna do some searching for gorilla stamps thanks to your thread here. So thank you for bringing up a subject I didn't realize existed. Noblespirit is a pretty prominent dealer that has lots of larger lots divided by country usually. I managed to pickup a Netherlands collection with about 3000 stamps for $27 plus shipping. Maybe not very resellable but definitely very cool stuff in it. I'll let you know if I find anything with a giant super cool lizard on it #128526;