If you are gonna start vending on any marketplace, I would suggest that you start off by buying, rather than selling. Buy small amounts, up to 10g of different products, dissect the packaging, dissect the postal labels, when it was bought, when the vendor created the label, when he shipped it (and where), all your questions will be answered and you will gain knowledge nobody else will be able to teach you.
Some tips:
1. There is no such thing as a smell-proof vacuum bag (aluminum and mylar included), all materials that you can use to seal WILL eventually permeate the bag, the question you need to figure out is WHEN.
2. Double, triple layer the vacuum bagging. Then place in another package for visual barrier.
3. Bags have thicknesses. Figure out where you can buy the thickest foil, the thickest mylar, etc. (protip: it ain't amazon and it ain't the website you buy your bongs from).
4. USE PROFESSIONAL SEALERS WITH VACUUM, if your bag an outer edge of an inch, then find a machine that will also seal an inch. Those impulse sealers of 1-2mm do not do the job properly. Learn about structure of your materials, of how weak points are created, what air pockets cause, learn about your material melting point, at which point and how much time does it seal up properly and at which point are you melting it too much and the seal becomes thinner and weaker?
5. Go the extra mile, go to the farmers market, to the supermarket, see how products are packaged professionally.. Decoy products can be a great idea if one has the right idea on how to utilize them.
6. WASH EACH LAYER WHEN PACKAGING. (dunk the package, if it bubbles up = problem, use a clean bath for each layer)
7. CLEAN ROOM, GLOVE THICKNESS, HAIR NET, MASK.
8. Different boxes, professional label printers, switch up sizes, switch up envelopes, switch up printing methods (research printer fingerprints), do not ship a batch of shipments in the same way and all at the same place.
