There is always somebody who is willing to pay the top dollar to get it.

http://www.ebay.com/itm/301002120339?ssPageName=STRK:MEDWX:IT&_trksid=p3984.m1435.l2648

I would guess that the last high bids were both from bidders outside of Taiwan. The price of flying geese, stamps or covers, in Taiwan seems lower than that of the comparable material offered abroad.

I agree. I know few people here are constantly looking for this type of covers. Some tends to bid much higher than my estimate.

Here is another one. This cover has one TA10 $200,000 surcharge. $7.5 matches the required postage.

http://www.ebay.com/itm/1950-Registered-Air-Mail-Letter-Bank-China-Taiwan-/301020265139

Nice cover.

這次是我標下的:

congratulations! I was the third highest bidder - just a little over 1/3 of your bid. This seller seems to have a few flying geese covers. Let's see what he will offer next.

I rememeber there was a cover franked with 2X4  (TA10 $200,000 surcharge) horizontal block of eight on Ebay earlier this year. I was too busy at that time and missed the opportunity.

It is clear to me that this seller has access to lots of flying geese covers sending from Bank of China to Cuba during the early 50's. It is possible that these covers are actually from Cuba which most people don't have access to.

Here is another one he just sold.

http://www.ebay.com/itm/1950-Registered-Air-Mail-Letter-from-Bank-of-China-in-Taiwan-/301093454585?_trksid=p2047675.l2557&ssPageName=STRK%3AMEDWX%3AIT&nma=true&si=9LsIK%252FuR6CDch14YG0SLJBbR7Tw%253D&orig_cvip=true&rt=nc

I'm wondering if he has one or two flying geese covers with the scarce $20 stamps on them.

Another good one.

http://www.ebay.com/itm/1950-Registered-Air-Mail-Letter-from-Bank-of-China-in-Taiwan-/301105293291?nma=true&si=wWnawrr3Q5wSWCW3rSUuLPtGr40%253D&orig_cvip=true&rt=nc&_trksid=p2047675.l2557

Did you get the 200k geese cover this time? 
I overlooked the lot.