shill biddding or just me?

[NATCARD]

I juist won this lot and am happy to have won it until I look at the bid history. It looks like I was Shill bid against by a user whose had HUNDREDS of bid retractions in the last 6 months and nearly 100 in the last 30 days. I appreciate any feedback. Here is a link to the item:
http://cgi.ebay.com/ws/eBayISAPI.dll...m=230690237541


Member Id: natcard( 4540) US $304.47 Oct-29-11 10:08:26 PDT Pay now
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Member Id: n***n( 3 ) US $299.47 Oct-29-11 12:06:59 PDT --
Member Id: natcard( 4540) US $297.51 Oct-29-11 10:06:20 PDT --
Member Id: n***n( 3 ) US $289.47 Oct-29-11 12:06:56 PDT --
Member Id: n***n( 3 ) US $277.47 Oct-29-11 12:06:52 PDT --
Member Id: n***n( 3 ) US $267.47 Oct-29-11 12:06:45 PDT --
Member Id: n***n( 3 ) US $257.47 Oct-29-11 12:06:38 PDT --
Member Id: n***n( 3 ) US $249.97 Oct-29-11 12:06:30 PDT --
Member Id: n***n( 3 ) US $244.97 Oct-29-11 12:06:29 PDT --
Member Id: n***n( 3 ) US $237.97 Oct-29-11 12:06:18 PDT --
Member Id: n***n( 3 ) US $232.97 Oct-29-11 12:06:17 PDT --
Member Id: n***n( 3 ) US $227.97 Oct-29-11 12:06:15 PDT --
Member Id: n***n( 3 ) US $222.97 Oct-29-11 12:06:05 PDT --
Member Id: n***n( 3 ) US $215.00 Oct-29-11 12:05:52 PDT --
Member Id: e***e( 224) US $210.00 Oct-29-11 10:07:30 PDT --
Member Id: e***e( 224) US $199.00 Oct-29-11 10:06:41 PDT --
Member Id: natcard( 4540) US $197.51 Oct-28-11 17:20:36 PDT --
Member Id: e***e( 224) US $170.00 Oct-28-11 13:47:30 PDT --
Member Id: natcard( 4540) US $155.55 Oct-26-11 14:33:52 PDT --
Member Id: e***e( 224) US $149.00 Oct-28-11 13:46:44 PDT --
Member Id: e***e( 224) US $144.00 Oct-28-11 13:46:33 PDT --
Member Id: e***e( 224) US $130.00 Oct-28-11 13:46:21 PDT --
Member Id: e***e( 224) US $125.00 Oct-25-11 22:02:53 PDT --
Member Id: natcard( 4540) US $122.22 Oct-25-11 18:31:16 PDT --
Member Id: e***e( 224) US $120.00 Oct-25-11 22:02:37 PDT --
Member Id: e***e( 224) US $110.00 Oct-25-11 22:02:23 PDT --
Member Id: e***e( 224) US $99.00 Oct-25-11 12:04:05 PDT --
Member Id: natcard( 4540) US $97.50 Oct-24-11 17:02:36 PDT --
Member Id: e***e( 224) US $90.00 Oct-25-11 12:03:47 PDT --
Member Id: e***e( 224) US $80.00 Oct-25-11 12:03:34 PDT --
Member Id: e***e( 224) US $70.00 Oct-25-11 12:03:19 PDT --