So VGPC just added a collection tracker to their website, which is something I've honestly been surprised they hadn't done yet.
I'm testing out their import feature right now, don't expect it to work very well.
Doesn't work very well. It did import 90ish% of my file, but a lot was incorrect. Some of that is my fault for not pulling out content that I knew wouldn't match (magazines, digital titles, swag, etc.) And my one copy of Sonic (360) pulled 7 copies over. *shrug*
And their actual management system is horrible and inconvenient. Doing the import the way they did it though gave about $43,000. Which isn't far off, I guess.
Everything is added as game only, so you have to manually mark box and manual, which for 4,000 titles is kind of a pain. Also, If you have game + box, or game + manual, but not game + box + manual, you get the loose price. Box + Manual with no game gives you $0. A lot of items so far have loose and new prices, but no complete, so you have to mark it as loose to have a value at all, and then that value is always wrong.
Very frequently I'm seeing title's values go down when I mark from loose to complete, so it just further enforces how bad VGPC is in my eyes at tracking things.