I can't see your actual want lists, but I see your overall collection is at about 173,000 cards, while your "collection" cards (cards you have) are numbered at about 3,200.
That leads me to believe you're at about 170,000 want list cards. WHich exceeds the number where you can add to your want list in bulk.
-- 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).