Just ordered one from 3e-audio's aliexpress store (their website links there, too). Tried putting two in the basket. Shipping nearly doubles, but you also get a second $10 discount. What kept me from ordering two at the same time was that they did this VAT tax deduction thing. As with everything on aliexpress, they will not collect tax on any single order above € 150, even if there is no good reason (yes, duty is only charged after € 150, but there is no duty on electronics.
That makes it a gamble. Since you can't control the shipping method, you may end up paying the full VAT and a steep brokerage fee. Had the opposite just happen to me. Ordered a PA5 II from the Linsoul shop. Somehow I overlooked the correction - the basket still said including VAT, but if you clicked to two more levels, it was really subtracted. The substraction happed to be almost the same as a discount that was advertised but somehow not applied. Anyway, the package ended up underdelared, but with a huge brokerage fee. That I didn't know until the bill arrived several weeks later.
I am curious: when you order from the US, do you get charged customs or tax?