I was going to comment on this "String bidding" scenario when it was first posted but I wasn't sure, nor am I still, what exactly it means?
If I am wrong, please correct me.
My take is, it means bidding on cards incrementally until you find out what the highest bid is in order to become the highest bidder?
If that is the case, I do not understand the need for this to be regulated/policed. Numerous times, when I see a card I want that already has bids placed for it, I will enter the minimum higher to become the top bidder. Sometimes/most of the times, my initial bid is not enough to become the highest bidder so I enter/choose/opt for the next $ amount until I beat the current bidder therefore becoming the highest bidder.
If the card later gets bid up again, I will either choose to beat it again or walk away if it is more than I want to bid or can afford. Am I now labeled as a "String Bidder"?
I also agree, 25 retractions is excessive in that time frame. I believe I have 2-3 total since I began bidding on E-Bay and my last one months and months ago but those were rookie mistakes and I am much more careful/thorough before I decide to bid on something now.