you cant just log on to e-bay and bid, you have to pre-register

you cant just walk into an estate sale and bid, you have to register and probably post a deposit

you cant just walk in and bid anywhere!!!

now, does ebay bar you if you are not a member of the "ebay buyers club"? NO

does an estate sale prevent you from bidding if you are not in the "national estate buyers assoc."? NO

does the snccc ban you from bidding if you are not a member? YES