Go to Rite Aid drug store & buy a Blue Dot Mastercard,then register it under the name Frank Zappa or Elmer Fudd,you can put the exact amount you need on the card for whatever you need to buy online.
Call your local UPS store & get their address,they are a franchise & not connected with the UPS corporation in any way & will receive any & all packages for you,they will hold packages as well until you can get them,they do this for a very small fee like $5 or some shit.
Forget Ebay,call HTG Supply on the telephone & place your order direct,give them the Frank Zappa credit card info & use the shipping address of your local UPS Store to have the package shipped to.
No paper trail with your name on it,no address with your name on it,no credit card with your name on it,no sweat.