Strange... never had a single problem with rcmart myself on multiple orders. Just customs could be annoying sometimes...

10A? On 2S I presume? That does actually not come all that often in AC/DC chargers. Don't think I've ever seen "more" than that. The dual port requirement makes it even harder. And on your budget... I think the SkyRC D100 is probably your best (maybe only) option. It's also sold on amazon.com or on ebay (prices vary though).