You could make your own. It's not exactly for the faint of heart though and a modern home sewing machine with plastic innards won't do it. The trick is finding treated cotton.
Built mine, alone, in a one bed room apartment several years ago. 15' x 15' x 10' with 6' walls. Single centre pole(3" oak in two pieces held together with angle iron and hose clamps) and 6' poles(1 - 2 inch saplings) for the walls. No stove attachments. Although that can be done.
100 meters of treated(water, mildew and fire) canvas cost me just under $500Cdn. taxes included, but that was 10 years ago now. My supplier has stopped selling cotton canvas too. Total cost was about $800Cdn.
The same size tent would have cost me $1500 - $2000 US to buy with no poles, pegs or ropes.
I actually ended up with two tents out of 100 meters. Made another 9x10x6 'wedge' tent out of the rest of the roll.