Etude sur les enchères eBay

Trouvé sur Internet une étude qui a analysée plus de 3500 enchères permettant de conclure que 15% des enchères sont remportées lors de la dernière minute….

To answer this question we took our sample of 3,500 auctions and stripped out items that received zero bids or were won with Buy It Now, which left 1,413 auctions. Of those, 215 were won in the last minute – this table shows when they were won:

Seconds Won Before End	Number of Items	% of Total Items
0	2	0.1%
1	28	2.0%
2	1	0.1%
3	8	0.6%
4	1	0.1%
5 to 10	53	3.8%
11 to 20	53	3.8%
21 to 30	27	1.9%
31 to 45	31	2.2%
46 to 60	11	0.8%
TOTAL	215	15%

Overall, 15% of auctions were won in the last minute, and 2.9% less than five seconds from the auction end. Note that it does not automatically follow that sniping software was being used – it is quite possible to manually bid in the last seconds of an auction. The picture of bids placed (but not necessarily winning) in the last minute is slightly different and shows the proxy system at work – sometimes earlier bids were higher or equal to the last-minute bid, and so took precedence:

Seconds Bid Before End	Number of Items	% of Total Items
0	2	0.1%
1	29	2.1%
2	2	0.1%
3	13	0.9%
4	4	0.3%
5 to 10	70	5.0%
11 to 20	63	4.5%
21 to 30	33	2.3%
31 to 45	38	2.7%
46 to 60	11	0.8%
TOTAL	265	19%

The total difference of 50 auctions represents last minute bids that were foiled by the proxy bidding system – in other words one in five last-minute bids did not win the auction (50 out of 265).