Ebay definitely can and will ban any account at any time even if the items are legitimate because of their VERO program (as stated above) - no one except authorized resellers are allowed to sell those types of items. Even if you have invoices, there's no guarantee your account is safe. There are many other ways your account/listings could go down, such as the copyright holder, a competitor, or an angry buyer reporting your listings and say you're selling fakes (even if you're actually not). Ebay is really sensitive to that type of thing.
Could they sue you for it? Sure they could. But will they? Not unless you are selling thousands. They won't bother suing unless you happened to be a really big time seller that turned out to be selling fakes. But you wouldn't likely get that far, especially on a new account. Yes, 10-25 is way too much. Maybe you could do that on a really old aged account but not on a new account. If you're absolutely sure these are real and you want to sell them on ebay, you really need a lot of accounts because you will burn through them often and quickly.
You really need a bank account for every stealth you create for the best way of getting your money. You can get creative by sending money to another Paypal account you own but Paypal will link the accounts together eventually and if one gets banned, they both will. You can also use the money in your Paypal account to buy things you want, or buy gold or something to cash out, but it's much easier to just open a new bank account. You can easily open a second account with Chase (a savings, or even another checking if you really wanted to).