They also have a great website and they list their bikes with prices. Now I have no idea how accurate their prices are; however, I took a lot of information from their site - to generate some statistical data. They have over 55 bikes for sale, but some didn't have enough information for me to use and I excluded anything that I considered non-motorcycle.
Since I'm not much of a haggler I'll take their prices as what I'd pay for the bikes.
The data in comma delimited format:
ID,Year,Make,Model,Price,Miles,Damage,2009,MPY
1,1993,Honda,CBR 600 F2,2499,27000,,16,1687.5
2,2004,Kawasaki,Ninja 500,2499,5300,,5,1060
3,1983,Honda,Gold Wing Interstate,2999,30000,,26,1153.846154
4,1998,Honda,VFR 800,3299,32000,,11,2909.090909
5,2007,Suzuki,S40,3599,4300,,2,2150
6,1993,Honda,ST 1100,3599,45000,,16,2812.5
7,1986,Honda,Gold Wing Aspencade,3999,54000,,23,2347.826087
8,2002,Buell,S3T Thunderbolt,3999,3000,,7,428.5714286
9,2003,Triumph,955 Daytona,4499,12100,,6,2016.666667
10,2007,Suzuki,DRZ 400 SM,4499,3300,,2,1650
11,2005,Kawasaki,Z 1000,4999,8300,,4,2075
12,2002,Kawasaki,ZZR 1200,4999,12100,,7,1728.571429
13,1998,Yamaha,R1,4999,5200,,11,472.7272727
14,2005,Kawasaki,Concours,5399,14000,,4,3500
15,2003,Kawasaki,Vulcan 1600 Classic,5399,4500,,6,750
16,2003,Suzuki,Intruder 1500 LC,5699,8500,,6,1416.666667
17,2006,Honda,Shadow VT 1100,5699,8000,,3,2666.666667
18,2006,Honda,VTX 1300,6499,2300,,3,766.6666667
19,2005,Suzuki,GSXR750 Anniversary,6599,8700,,4,2175
20,2006,Buell,XB12R,6699,5400,,3,1800
21,2003,Harley Davidson,Sportster 1200C Anniversary,6899,5500,,6,916.6666667
22,2007,Ducati,S2R,6999,3400,,2,1700
23,2006,Kawasaki,ZX14,6999,7700,,3,2566.666667
24,2005,Honda,CBR 1000 RR,6999,7900,,4,1975
25,2008,Yamaha,FZ1,6999,4000,,1,4000
26,2008,Honda,VTX 1300,7199,500,,1,500
27,2006,Suzuki,GSXR 1000,7499,7200,,3,2400
28,2006,Ducati,749,7599,500,,3,166.6666667
29,2007,Suzuki,C90 T,7699,3500,,2,1750
30,2005,Yamaha,FJ 1300,7799,28000,,4,7000
31,2008,Yamaha,V Star 1100 Silverado,7799,360,,1,360
32,2007,Suzuki,GSXR 1000,7899,4900,,2,2450
33,2003,Kawasaki,Voyager VII,7999,2700,,6,450
34,1989,Harley Davidson,Electra Glide,7999,31000,,20,1550
35,2001,Harley Davidson,Lowrider,7999,7200,,8,900
36,2009,Honda,VTX 1300,7999,4500,,1,4500
37,2006,Yamaha,Roadstar 1700 Midnight,7999,6700,,3,2233.333333
38,2008,Yamaha,R6,8199,25,,1,25
39,2005,Honda,VTX 1800,8499,5000,,4,1250
40,1993,Harley Davidson,Electra Glide,8499,24000,,16,1500
41,2005,BMW,R1200ST,9799,2200,,4,550
42,2008,Kawasaki,Concours 14,9799,2200,,1,2200
43,2001,Harley Davidson,Heritage,9999,31400,,8,3925
44,2000,Harley Davidson,Ultra Classic,10999,30500,,9,3388.888889
45,2004,Harley Davidson,Fatboy,11999,6800,,5,1360
46,2005,Harley Davidson,Heritage Softail,11999,32000,,4,8000
47,2003,Harley Davidson,Road King,12999,21000,,6,3500
48,2006,Saxon,Sceptre,13599,2700,,3,900
49,2006,Harley Davidson,Fatboy,13599,7400,,3,2466.666667
50,2005,Harley Davidson,Road King,13899,5400,,4,1350
51,2005,Harley Davidson,Ultra Classic,13999,32000,,4,8000
52,2003,Harley Davidson,Road King Screaming Eagle,15799,26600,,6,4433.333333
53,2004,Big Dogs Motorcycles,Ridgeback,15999,2400,,5,480
54,2008,MV,Augusta F4 312R,16999,1710,,1,1710
55,2008,Harley Davidson,Road King Screaming Eagle,24999,6500,,1,6500
There is an empty column for Damage - turned out that none of the bikes had any. They had a bunch of bikes with light damage a while back when I checked their site out.
The most expensive bike they had was:
2008 HD Road King Screaming Eagle @ $24,999 with 6500 miles on it.
The least expensive bike they had were:
1993 Honda CBR 600 F2 @ $2,499
2004 Kawasaki Ninja 500 @ $2,499
The average used motorcycle price was:
$8,228
(In reference to another web topic - how many miles do you have on your bike...)
The Maximum number of miles on a used bike was:
54,000 on a 1986 Honda Gold Wing Aspencade
While that seems like a lot of miles, it is only 2347 miles per year.
(In reference to another web topic - how little number of miles on a bike when you are looking for a used newish bike...)
The Minimum number of miles on a used bike was:
25 on a 2008 Yamaha R6 - for sale @ $8,199 (very near the average sale price for a used bike). It seems to sell for $9500 new (give or take) + your OTD costs. So, $8,199 seems like it could be a real price break - but you'd have to keep in mind that the bike wasn't even broken in...
And no, I don't understand that. I'm really just starting to know (and actually like) my Suzuki B-King and I've put 1185 miles on it at this point.
The maximum age of a bike on sale is:
26 year old for 1983 Honda Gold Wing Interstate @ $2,999 with 30,000 miles on it.
The minimum age of a bike on sale is:
Less than 1 year - 2009 Honda VTX 1300 $7,999 with 4500 miles on it.
The average age of a used bike for sale is: 5.8 years old.
But the best piece of information I gathered was this -
The number of miles on used bikes for every year of age is:
2227 miles.
So, from this I would gather that the average motorcycle rider puts less than 2,500 miles a year on their bike.
The maximum number of miles per year was on this bike:
2005 HD Ultra Classic with 32,000 miles on it or 8,000 miles per year.
The minimum number of miles per year of course is the same bike that had 25 miles on it.

I didn't do anything like intra-quartile ranges - which would probably make the averages more accurate. The sample size is a little small. I could increase the sample size if any of you can direct me to another large seller of used bikes that posts reasonable prices. We might have some movement in the numbers or not.
There were a few bikes that kinda threw me - 2 "Big Dog" motorcycles that I'd never heard of before but seem to be built from the ground up custom bikes.
Some brands are under-represented - such as Buells.
But on the whole I think the data is pretty good. I didn't classify the bikes by type either. It would have made my sample far too small to say the average used cruiser costs X or the average sport bike or tourer costs y on the basis of only a few bikes each.
I only wish I'd done this earlier when their stocks were almost all different bikes. And then grabbed this information now and I'd have a sample size that is almost twice the size of this.
They had a bike I probably should have bought, too. A 1985 Honda Interceptor in beautiful condition - and cheap as all hell too...
Anyway, sorry for boring you guys with my statistical musings, but some of you might find this information useful.
It can answer some questions like - do you put more or less miles on your bike than the average motorcycle rider?
RhadamYgg