1887 Allen & Ginter Cap Anson 2.5 Offer Question ?
 

First I understand a seller can price their baseball card at any level he or she may wish. Depending I suppose if they really wish it to sell, shouldn't a price be somewhat in-line with printed or a grading companies published value---example the 1887 Allen & Ginter Anson baseball card--

It appears Ebay listed sell prices may be up to twice various published value guides. Why the vast spread in values. ( I understand Ebay/papal 13percent fee's)

I offered a seller 1750.00 for a 2.5 Anson--and was countered at 2150.00. free shipping--

So how does one determine a fair offer price?--was my offer not fair comparing to grading companies published values in that grade?

A couple SGC 20 (1) have sold for around 1500 recently, so maybe? I couldn't find the card there, but did find these.

https://www.ebay.com/itm/1887-Allen-...cAAOxygPtSsgNW

https://www.ebay.com/itm/1887-N28-Al...UAAOSw5Nxagfhf

Your offer seems fair. Maybe the card was particularly nice for the grade which would warrant paying a premium.