Hi my advice for buying off
ebay.
I know some sellers do not scan the reverse, I've asked, but was told they usually don't scan the reverse side for stamps under $5 for sale? There are all sorts of buyers, new stamp collectors, etc., we all want to see the reverse side of a stamp, actually any stamp we are thinking of buying. I guess some sellers do not care about new collectors.
I love the sellers who have no idea what they have for sale, I have picked up many good varieties and other stamps for very little. But you need the knowledge before you try this activity. Read, read, read, then venture out with you knowledge.
Be very careful, sometimes a seller will have something for sale, but then send another example, saying the example you wanted was sold already. Later from the same seller you will see the same stamp for sale. You need to read everything in the description.
Most of the sellers are excellent and honest, but there are dishonest sellers, stay clear of them for now, gain knowledge.
My advice stay away from sellers who do not show scans of the reverse side of the stamp you are interested in.
These are my thoughts, I hope you success in your future stamp collecting adventures (you will have adventures)