This from ecommercebytes.com:

Following the 2018 U.S. Supreme Court’s decision in South Dakota v. Wayfair, Delcampe has taken the decision to no longer offer its services in the following States as per today, for an indefinite period of time, in order to avoid any risks of non-compliance with the legislation of these States:

AK Alaska, AR Arkansas, DC District of Columbia, GA Georgia, HI Hawaii, IL Illinois, IN Indiana, KY Kentucky, LA Louisiana, MD Maryland, MI Michigan, MN Minnesota, NC North Carolina, NE Nebraska, NJ New Jersey, NV Nevada, OH Ohio, PR Puerto Rico, RI Rhode Island, SD South Dakota, UT Utah, VA Virginia, VT Vermont, WV West Virginia, WY Wyoming.

We are sorry that we can no longer offer our services for the moment, and we hope to be able to see you on our website in the future, once it will be adapted. Your account will remain closed until further notice. Any outstanding debt to Delcampe will be waived. Should you have any credit left on your Delcampe account, please contact our Customer Service at en@delcampe-support.com with your banking details.

Best regards,
The Delcampe Team