First off... you do not want this:
(Tulle netting)
You want Organza, which looks like this:
You don't have to get ribbon, but the Organza ribbon is perfect and a roll of ribbon is cheap. Probably best to buy white, so you aren't dealing with dyes. This also comes in bolts at a fabric store, and you could get 1/4 yard.
This stuff is exactly what the Lipton gossamer teabags are. Nice find Bizzy and Kenb.
What I found in the craft stash were 2 kinds of organza ribbon for testing.
First is labeled 100% Nylon, from Michaels, Special Value (the cheap stuff) 5/8", 15FT roll, no idea what I paid for it, probably $2. It has a more ribbon like texture at the top/bottom with the sheer in the center. I just left it on, figured it would just suck up a bit more liquid. I cut about 1-1/2 inches of length and ....... accordion folded (stuffed) it into my little 510 cart using a toothpick to help get it down in, but not too tight. Tucked down the cut off end end back into the cartridge. Loaded up with liquid and have been smokin on it for about 30 minutes. No leak, no mouthful of liquid. Seems to be holding plenty of liquid. Rolling seems to be a pain for a really small cart. Maybe I'll try again...
Then I used the same stuff above for a larger cart (DSE801 penstyle). I accordion stuffed it in, filled it up and got a huge amount of liquid in my mouth. Nasty. Suctioned some out of the cart with the glass dropper, and it seems to be fine now but gets lots of liquid on the side of the cart (cart sweat) which these do anyway... probably not optimal for a larger cart to stuff it in, or maybe I need to do it better (more/less). Smokes fine though and probably would be better without the thicker woven edges and just the
Organza ribbon.
The other ribbon I tried, (Michaels 3 yards, $3.99, also 100% Nylon, #9 32mm or 1-1/4") has tiny copper wires in the top and bottom of the ribbon. I cut about 6"-8" (more/less) and left wire in it. I rolled it around a toothpick and put the roll in my DSE801 cart. The wire left at the bottom keeps the roll nicely tight. I trimmed off the top to cut to length by pulling it up just a tad (the wire at the top is gone then) pushed it back down in the cart and fanned it out a bit. Took plenty of liquid in to fill it (but I was careful to not overfill like the last mouth full since now I have a stomach ache! Bleh

) It is working like a champ. Waited about an hour, took it out and no dye bleeding. Still would rather use white.
So! Looks like you don't have to pay for tea you aren't going to use. Buy Organza and look to check the fabric content for either Polyester or Nylon listed on the roll. I'm sure Walmart has it as well as a bazillion fabric/craft stores.
I can see the guys now - shifting uncomfortably from one foot to the other while standing in the ribbon isle or in front of bolts of fabric and scratching their heads... giving up and telling the fabric lady they want Organza in white... LOL!
If you decide to use this, please give a report too since I've only got about an hour use total in on this!!
Vape on!!