No, not cards, you're fine there. Yes there will be the standard delay in shipping but otherwise no problem. If you sell anything fairly heavy like a book the postal rates to Canada are astronomic compared to sending items across America. I sold some books on eBay and was shocked (I charged $5.00 for shipping thinking it would be fine) that the three books were $9.90, $9.90and $12.05! Ouch! Well, you live and learn and eat some shipping fees but I thought I would give a shout out here because I know card collectors who sell on ebay often sell other items also. No problems with DVDs but books are killers!