From what I can see, there is no mention of this in the Sytem Requirements, overview or feature list. What you have shown is an extract from the FAQ. which, in my experience, is what you refer to when you are looking for an answer to a particular problem after the fact (of purchase). As I would expect multiple currencies to be an integral and supported part of any eCommerce solution - both locically and as a matter of courtesy to international customers, - its ommission confounds me.
I find it particularly odd - given that the feature has been both requested and the subject of discussion in the past - that the engineers have again decided not to implement it. There can be little doubt that it must have been mooted in any planning meeting, and a decision made that they just couldn't be arsed to see it through on behalf of the non-dollar customer.
My previous point was that as International customers support WebAssist, it would be nice if WebAssist were to reciprocate by considering and supporting them.