do what i do and get in good with a local mom and pop greenhouse. granted i worked for the guy for 5 springs(i havent worked for him for 3 years now) but most anything i need that he gets in bulk i just help myself to what i need which usually dont amount to much on his end and 99% of the time he just waves me through when i try to pay for it. they will even have some of it on hand in the winter when they arent growing out bedding plants and veggies. a good way to save room while growing out small Drosera, Sarrs, other seedlings and Utric starter plugs is to use "4-packs" like the nurseries sell bedding plants in. i must go through 10 or 12 flats(12 4-packs to a flat) a year. they are generally cheap if yah have to by them too. i generally get to help myself to his bulk 3.5 inch pots too. anything bigger, if im willing to wash out previously used pots i can take them for nothing.
me? yes but when you start out with a few species and and species fairly quickly and regularly pots become scarce even with reusing. the 4-packs are made out of a plastic that starts desintigrating pretty bad after 18 months of UV exposure. they get pretty brittle. the 3.5 inch pots i use are made of much better stuff and get reused. plus i think its quicker to bloom most Utrics if yah start the plugs out in something small. thet them get crowded in that then move them up to the 3.5 inch pot they will live in for as long as im going to keep them. so i reuse pots where i can but i cant always reuse the 4-packs i like using, plus you generally rip them apart for species like sundews to disturb the roots as lil as possible.