Shipping time - It took a while when I ordered (just after christmas, there were some delays then). I think 7 weeks all up, 4 in production and 3 shipping. I think if you ordered now it looks like closer to 2 weeks production max, shipping is probably similar although reportedly very variable. Be patient. 
Filament - I've purchased from an online place called bilbycnc. They have $10 shipping and not a bad range of filament. The filament I've used (to the best of my knowledge) has worked well, no complaints.
Condition - very good, levelled the bed and adjusted the x endstop switch and it was printing.
Can't help on the import duty as my SD3 was under the $1000 threshold.
Hope that helps.
SD3. Mk2b + glass, heated enclosure, GT2 belts, direct drive y shaft, linear bearings, bowden-feed E3D v5 w/ 0.9° stepper
Smoothieboard via Octoprint on RPi