[MR] trying to find a square/rectangular canvass tent

[iain]

It seems all my Scadian friends recommend me getting a canvass tent instead of dressing up an ezup (first up ) 10x 10 gazebo.  I just want a tent that is big enough to have a queen sized ari mattress, an upright protable little wardrobe and where I can change standing up (I am 6'3).. all while staying dry and retain some sort of heat in the near and sub zero temps.  AND keep within about a $500 budget (used is fine) 

Is it attainable

IAIN