Past Sales 2 questions

1. Is it just me or is the recording of unsold items within the past sales section on a coin page absolutely ridiculous?

From my understanding, the recording of past sales, goes directly into calculating the coins value / market price as recorded by Numista. I know of one coin that has the same coin listed 3 times from Katz Auctions, the 2 times it sold - for €110 & €100 are now reduced to an average price of €70 because the coin didn’t sell once, where the coin should have a sale value of €105 from its 2 sales.

I once questioned a non sale item in a past sale and tried to delete it, I received the following response along the lines of „the non sale is relevant, and because it wasn’t sold should stay attached to the coin“ even though the coin was sold at a later auction. For this logic it means that the recorded price for this coin, and thus it’s value (recorded by Numista) is half of what it sold for! This is absolutely insane, should a shop selling trainers at 49.99 half the price because no pair sold the week before?

2. Is it just me or is the recording of coin sales within the coin page without the correct version (year or mint) a waste of time?

Time and time again I look at past sales recorded within a coin page only to see an „undetermined“ version of the coin recorded. Is this an automatic recording of a past sale that couldn’t recognise the obvious year and mint mark, or is this pointless lazy recording of past sales by Numista members? If the recording of past sales goes to determine the value / market price then surely an undetermined version adds nothing and is totally irrelevant, so why record a sales value of €50 if it can’t be attributed to a specific coin with multiple years or mints.

1. My understanding is if a coin doesn't sell it's not recorded as selling for $0 so without a sale value it doesn't affect the Numista value. I could be wrong though.

2. Most sales are entered by the Numista Robot without any review or approval. I've commented on this problem where Mr. Robot assigns the sale to the wrong coin (usually because Katz lists the wrong N#) or doesn't list the year line in a way Mr. Robot can read so it gets assigned to Undetermined year line.  The reply was that even if the Undetermined year line was used it still had value to Numista members.  I'll try to locate my post about this. 

Edit: https://en.numista.com/forum/topic114440.html#p1207139

https://en.numista.com/forum/topic168919.html

https://en.numista.com/forum/topic154011.html#p1208729

The only value an unsold item has IMO is when it can provide a picture for a year line. 

Another gripe I have with Katz outside of the already mentioned ones, is that they very often use stand-in pictures for their auctions so you get sometimes a dozen auctions with the same picture.

I also thought that referees now get change requests to validate automatic auction additions but I still saw a change request a few weeks ago that got automagically added and validated without me knowing that it even existed.

Thanks for the info, so in conclusion; there still might be a problem with auto adding from Katz and from what Idolenz said, they use incorrect images for a coin, ie a stand-in image for a coin. This is concerning, as when I add a version, I usually look at the image for the year etc, who’s to say that Katz uses a Stand-in image that has the same year?

I didn’t see anything in the previous forum posts that confirmed that non sold items are not recorded as 0, this would be logical and a good idea, but I still don’t see the point in listing non sold coins, even if Numista robot is adding them.