I believe the term “port” was coined on the Blowout Cards Forums. I am guessing that this may just be short for “portfolio”.
In any case, many people have successfully made offers on entire collections (or portfolios), and have transfered them from one account to another, but there has been a recent rash of people trying to do this with larger collections. Generally when people try to do a transaction that involves more than 1,000 cards, the server can’t handle the request in the standard 30 seconds allotted to a web request. So we have had to manually run the commands to give them enough time to complete.
After having to do this twice in the past two days, we decided to build a feature in our in-house software to automate the process. Now people can call in to have us facilitate a portfolio purchase.
Once we get the agreed upon price, we send email to both buyer and seller to have them verify that they are happy with the transaction. We then run a command to transfer the entire inventory of cards that are for sale at the specified price.