Thanks, David, for adding the link to my thread about how I added my inventory of 93,000+ cards to the site in 3 weeks. I was literally adding 3,000-5,000 per day. 1,000 won't take you very long at all. Just get familiar with the different tools available. Some tools work great if you have a couple cards from a set, others work well for a lot of cards (but only one of each) from a set, while others work better if you have a lot of cards (many of each) from a set. Each tool has its own "efficiency". Take 30 minutes to learn them, and you'll save yourself hours.
-- Dan --
Note: Please see my profile for more info regarding trading (section updated 3/4/2024). I have added a large portion of my inventory to the site, and currently have trading turned on (details are in my profile).