How much would you estimate your collection to be worth?

I don't know if this has been asked before, I wasn't able to find it anywhere at least, but I've been curious for a while now... About how much do you all think you've spent on your toy collections, or how much would you estimate it to be worth (including items received free for review)? I almost hate asking, but I've been seeing pictures or videos of other peoples collections (or at least parts of their collections) and I have to say, I'm amazed by how many toys some people have. And I will also admit that I'm quite jealous of some of your collections! less