Guyana Gandhi FDC price difference in selling price within a week . Again it's a price decline ?

Hello Gandhi Collectors,

Happy 4th of July.

I am not sure why we are seeing this kind of price difference in Gandhi Philately. Guyana 1969 FDC was sold for $25 on May 28 and on Jun 18 it was sold for $11.!!

What a price difference in 20 days. It's almost 150% less.

Seller of both FDC is "gdstamps" from Canada.

Buyer:-  kenseq81  from UAE

Buyer:-  30061979sc from India.

Do anyone know why such a price difference ?

Do you think this just a normal ebay transaction or ???

In past I saw this FDC selling under $10 all the time so not sure why it sold for $25.!!

Price Decline in Gandhi Philately again.!!

 Not sure why multiple Gandhi FDC from this seller. Need worth watching when buying.

Want to know more about FAKE and FORGERY stamps then checkout other blog post click one of the following link and you will be surprised.!!!

1) Philatelic FAKE and FORGERIES.
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3) Stamp collection CHEATING.
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9) Greatest Stamp Collection Scandal 
10) Biggest stamp collection SCAM
11) SCANDAL in stamp collection 
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Now does it make sense to collect stamps after looking above blog posts?

Thanks
Gandhi Stamps Club