Far And Wide Used Stamps - Incorrect Numbering On Selling Sites

On purchasing some Far and Wide used stamps, I have been caught out a couple of times with sellers putting the wrong numbers against the descriptions….mostly on 9.2 perf stamps.
When receiving them they are actually the 8.2-8.50 perf which clearly have the 3 joining specs on the perforations top and bottom and are a different number altogether. I now try to enlarge the image on screen and look for the 3 nibs….this is happening quite a lot, even with other of a similar nature.
I recently wrote to a seller and asked him to verify what perf the stamps he was selling and his response was ' I just buy them in and I have not got a perforation gauge that measures less than 10'
I believe in these cases the perf should be part of the description
RANT OVER
Robert

I have seen this when the variety is a suffix of a main number. For many sellers, if they say 114 it could be 114, 114a, 114b, etc. With Scott, the 114a can be the inexpensive value. Most printed albums would just provide one space so it may not matter.

A recent example for me is the Singapore 1990 era insect set. The second printing was by Leigh-Mardon (suffix listed in Scott) but most sellers must not be aware as I get them identified as the non-suffix number. The catalog value of the second printing is higher but from my purchases they do not seem as scare as value may indicate.

Why would you even buy from a seller that lazy?