ICBC UnionPay credit card testing for ONLINE transactions:

Note: These tests are mainly due to curiosity in determining the limits of UnionPay compatibility.
There were other websites which flat out said my card was invalid when I tried to enter.

Charged as full amount to completion:
1. Amazon - as many of you know Amazon supports UnionPay; I did notice a curious difference though:
Reload balance - NO; card is NOT available for this; it shows other cards like Amex & Visa cards that are in Amazon account
Buy Amazon eGift card - YES; worked fine; I then redeemed the card into my Amazon balance
Anyone know why the difference? The second one is just a longer process

2. PG&E (power company) - YES; paid towards bill without issue; just worked, did not select card type

Accepted card, but no charge yet to confirm success:
3. Verizon - YES; accepted & added card, auto recognized as Discover; it performed the 1c check to determine if valid

4. Netflix - YES; accepted & added card, auto recognized as Discover; NO test charge made by Netflix

5. Geico - YES; accepted & added card, auto recognized as Discover; NO test charge made by Geico

Appeared to work, then failed:
Costco.com - allowed me to add card, but erroneously auto-identified it as a Visa (note that the logos of Visa, MC, Discover, JCB, & Diner's were shown as types they accept); allowed me to place small order, but then later order was cancelled due to "billing information is incorrect"; I double-checked that info on my order & it was fine.