Well, first of all a canadian can't redeem the 50$ back, so you must assume it's 599$. You WILL get charged 12.5% taxes so total cost including tax would be about 735$ can assuming you pay 20$ (because free shipping is only in USA).
Concerning newegg, I contacted them once and the lady told me that habitually, items that were ''deactivated'' would not come back. Assuming to the posts of ppl here, a good option is mobile city online, who sell the N900 for 629$ + 30$ for regular shipping or 60$ for express. Some people get charged 80$ for taxes, some don't, it's a dice roll. Anyway, I ordered mine yesterday night from mobile city online, they called me today to confirm and I will get my tracking number very soon. I took the express shipping
Good luck in getting yours!! Post when you order it, and where you ordered!