Not too long ago i sold a pen collection.  I am not an expert in the area of fountain pens and did admit as much, perhaps that was my mistake.  For the most part the pen sales went well and i learned a lot about  vintage pens and pen collectors.  Here again, most of the pen collectors were outstanding to work with and offered suggestions that i used.  I take very good close up photos and lots of them.  To make a long story short, there were three pens that were expensive, one is excess of $300 that were sold, packed very well and shipped out.  The buyers complained that the caps were, cracked, broken, did not seat properly.  I had the pens returned and refunded the money.  The issue here is that the caps i got back were not the ones i shipped out with the pens.....didn't match the photos.  I sent out good product and got junk back.  Of course they all filed complaints with Pay Pal and eBay and they got their money back.   They upgraded to a very nice item.  I guess all i'm saying here is be careful, do your best with the listing and i guess if i had it to do over again, i would fight this, but the result would probably be the same.