“Marketplace seller” means:
1. A seller who makes retail sales through any physical or electronic marketplace owned, operated or controlled by a marketplace facilitator, even if such seller would not have been required to collect and remit the sales tax or use tax had the sale not been made through such marketplace; or
2. A seller who makes retail sales resulting from a referral by a referrer, even if such seller would not have been required to collect and remit the sales tax or use tax had the sale not been made through such referrer.