Could this spell the end of Amazon's Kindle?

Is Kindle charging US ebook buyers two different prices for the same book, depending on what state you live in?

This is a copy of my KDP 6-weeks Page with all the irrelevant items taken out.
gr ref net % list mb off del $$
09/22/2012 The Art of... B007O0FNQA 45 0 45 70% 2.99 0.79 0.00 0.12 0.00
09/22/2012 The Art of... B007O0FNQA 2 0 2 35% 2.99 N/A N/A N/A 0.00
09/22/2012 Patent Mine B001F7AJHQ 1 0 1 70% 2.99 0.69 2.99 0.10 2.02
09/29/2012 The Art of... B007O0FNQA 4 0 4 35% 2.99 N/A N/A N/A 0.00
09/29/2012 The Art of... B007O0FNQA 28 0 28 70% 2.99 0.79 0.00 0.12 0.00
09/29/2012 Patent Mine B001F7AJHQ 1 0 1 70% 2.99 0.69 0.99 0.10 0.62
09/29/2012 Patent Mine B001F7AJHQ 1 0 1 35% 2.99 N/A N/A N/A 1.05
10/06/2012 The Art of... B007O0FNQA 8 0 8 35% 2.99 N/A N/A N/A 0.00
10/06/2012 The Art of... B007O0FNQA 63 0 63 70% 2.99 0.75 0.00 0.11 0.00
10/06/2012 Patent Mine B001F7AJHQ 6 0 6 70% 2.99 0.69 0.99 0.10 3.72
10/06/2012 Patent Mine B001F7AJHQ 1 0 1 35% 2.99 N/A N/A N/A 1.05
10/13/2012 The Art of... B007O0FNQA 40 0 40 70% 2.99 0.75 0.00 0.11 0.00
10/13/2012 Patent Mine B001F7AJHQ 1 0 1 35% 2.99 N/A N/A N/A 1.05
10/13/2012 The Art of... B007O0FNQA 3 0 3 35% 2.99 N/A N/A N/A 0.00
10/13/2012 Patent Mine B001F7AJHQ 2 0 2 70% 2.99 0.69 0.99 0.10 1.24
10/20/2012 Patent Mine B001F7AJHQ 1 0 1 35% 2.99 N/A N/A N/A 1.05
10/20/2012 The Art of... B007O0FNQA 37 0 37 70% 2.99 0.75 0.00 0.11 0.00
10/20/2012 The Art of... B007O0FNQA 3 0 3 35% 2.99 N/A N/A N/A 0.00
10/20/2012 Patent Mine B001F7AJHQ 4 0 4 70% 2.99 0.69 1.49 0.10 3.88
10/27/2012 Patent Mine B001F7AJHQ 6 0 6 70% 2.99 0.69 0.99 0.10 3.72
10/27/2012 Patent Mine B001F7AJHQ 1 0 1 35% 2.99 N/A N/A N/A 1.05

Notice that 'Patent Mine' AND 'The Art of...' are reported twice each week.

It's very odd and curious to me. Isn't it for you?

Look closer at Both and you'll find that Amazon.USA seems to be selling the same book at DIFFERENT prices depending on which server farm it's being purchased through.

On the week of 10/27, 6 copies of Patent Mine were sold at .99 each, but someone, somehow, on Amazon was charged 2.99 that same week (Amazon owes him $2)!

But the flaw isn't limited to Patent Mine, it's also happening with my FREE book, The Art of...

Take a look at its numbers for 10/20 and you'll see 37 were @70% and 3 were @35%. I'd bet I'm not alone in this.

I looked back through my monthly KDP xls sheets and found that it seems to start around June of 2012 and seems to affect about 10% of all the books sold. Obviously, as you see from above, I'm not a big seller, so this is chump change, but be warned that the flaw is out there, Kindle users!