I agree that there are some dealers out there with the silliest ideas of values. There are also individual sellers who have even sillier ideas of values and perhaps the notes on this are from such a silly dealer but they could also be from a crazy individual seller.
Perhaps these notes and price were applied before
ebay became what it is today and when prices on some collectables were overly high because the person selling did not know how common their material actually was other than they had not seen it in their town before.
This folded letter is a simple bill of sale which is perhaps the most common and least collectable of old letters since that is comprised the majority of mail at that time, just like it is today. Most collectors are seeking letters that are personal letters and that discuss historical events of the day, or that are from or to someone famous.
Posted 01/17/2016 1:38 pm
Here's an almost identical cover priced at EUR 20:
