I have not seen any middleman services like aliexpress that allow sellers to accept BTC yet. You will understand also they are protecting their sellers from BTC volatility.
This is utter BS. I'm using AliExpress now and then and the currency I'm using with is Euro. Internally, AliExpress is certainly working with something else - I don't know if it's USD or CNY or another - however, when it has happened (not too often, ut still...) that I didn't receive the ordered product and asked for refund, the amount was a bit different (usually a few cents in any direction!!) which is 100% caused by fiat forex volatility (especially as it takes about 2-3 months from ordering to asking for refund).
They can easily do the same with bitcoin too and nobody will complain/ people will understand that their base currency is fiat and the amounts of BTC may differ.
A better explanation is that AliExpress being a Chinese company... is following China's rules on Bitcoin (ie. ban).
This is pretty much the best list I've got for my country, but for me, only 2 gift cards from there are somewhat useful. Not much.