You can have a transactions number in the tens of thousands.
You don’t understand how the system works.
As I said, the numeric feedback number is the number of positives minus the number of negatives.
Thus, a person who has received 100 positives and 97 negatives would have a feedback number of 3. Likewise, a person who has received 3 positives and zero negatives will also have a feedback number of 3.
(This is hypothetical, of course, as the person with 97 negatives will have been kicked off of eBay long before he reached 97.)
The first case will have a positive feedback percentage of 50.8% (100 positives, 197 total), the second will have a positive feedback percentage of 100%.
There is also a neutral feedback, which isn’t counted in the feedback number, but which is counted the same as a negative in the positive feedback percentage.
The winning bidder in the GZ auction has 3 positives, zero negatives, and zero neutrals. His feedback number is 3, and his positive feedback percentage is 100%.
But these numbers are misleading in one important respect. That is because eBay has made it impossible for a seller to give a buyer anything but a positive feedback which has given crooked buyers free reign to work scams on sellers.
A typical scam would be to buy a genuine article, claim that it’s a fake, return a fake to the seller and demand a refund, and keep the real one for free. In nearly every case, eBay will back the buyer, not the seller.
Anyway, if your only activity is as a buyer, your feedback percentage can’t be anything other than 100%.