Looks like my input won't make the cut, but here it is anyway.
Pricing in the Classifieds is by default in US dollars.
Although you can specify a currency in the creation of the ad, unless it is specifically NOT in USD, nothing is said in the ad. That will lead to problems for many of your users. I would like the ad to explicitly state $US unless something else is specified. I just lost a sale after many PM's back and forth of negotiation because the buyer assumed that, living in Canada, I was pricing in Canadian dollars, basically a 9% discount at the moment.
I suspect this is especially a problem for your Canadian members, and for some reason there seems to be a disproportionate number of us on RFF. I suspect the Aussies have the same beef.
Cheers, eh?
Dez