Growing a Patina after sale on eBay

A very interesting pair of eBay Auctions.
On 2003 November 30th Mike Epstein posted a report on CFDL a coin with a fake acid patina which was on auction on eBay. This is not a rare occurrence, except for the fact that feedback had clues to identify the ebay Auction at which this unmistakably the same replica coin had been won by seller on 2003 September 7th.

eBay 3043775217 Römische Münze Kaiserreich Seller: hintberg(295) Registered in Germany Umschrift: C CAESAR AVG GERMANICUS PONMTRPOT Die Münze befindet sich in einem Münzrahmen. Viel Spass beim Bieten bidders : 4 Realized : EUR 48.50 ($58.18) Winner: xromantik(220)
eBay 2205609526 Sesterz CALIGULA 3 Sisters Seller: xromantik(220) Registered in Switzerland 35mm diameter, brown-green patina FS.: Head of Emperor Caligula RV.: 3 Sisters,Agrippina,Drusilla,Livia Weight 26.7 grm. bidders : 4 Realized : $129.16 Winner: silbanaccus(173)

Online freetranslation of first auction listing and feedback from German to English returned
Roman coin emperor empire
Inscription: C CAESAR AVG GERMANICUS PONMTRPOT
The coin is in a Munzrahmen.
Much joke in the offering

I assume that could be clearly understood as being sold as obvious Fake.

xromantik as Buyer gave seller negative feedback on 2003 Sept 20th :
Complaint : verkauft eine kopierte M|nze,reagiert nicht auf mails,so gehts nicht!
Response by hintberg - konnte wg Urlaub nicht reag. habe Geld zurückgeschickt ,Münze aber nicht zurück

Complaint : Sold a copied coin does not react to mails, goes it not!
Response by hintberg - wg vacation could not had sent back reag. money, coin however not back.

The seller retaliated to the buyer's negative feedback on 2003 Nov 11th:
Complaint : Achtung vor diesem E-Bayer!!Hier droht Betrug!!Vorsicht !! Vorsicht!! nie wieder
Response by xromantik - reagiert sauer,weil er selbst negativ beurteilt wurde.Schade,ist sonst ganz o.k.

Complaint : Attention before this E-Bayer!! here fraud threatens!! caution! Caution!! never again
Response by xromantik - reacted sourly because it even negatively judged became would damage., is otherwise entire o. k.

The buyer has clearly taken the joke too far in his attempt to recover his losses. Although he recovered double of his bad investment, he probably ruined any reputation he may have had as a seller.

Wasn't it obvious to first buyer from image that it was a replica.
Anyone can see that and the seller even joked about it.
Why didn't seller offer buyer a refund since he shouldn't have listed it without an explicit statement that it was a replica.

Please also read Alan Van Arsdale post on Green Acid Patina.

If someone who knows german can correct the Automated translation please E-mail me