Right, so you're saying people should print their own tags, but still require them to pay logistics to get the item into the game?
Nope, not at all.
I'm saying that they print their own tags, there is no in game benefit for them to do so save that they can now turn a profit on their brownies whereas without tagging them, they wouldn't be allowed to do so.
No payment to logistics, no requiring they have their tags signed. There's no reason to limit or control the number of IG brownie tags, as, with very few exception, I can't imagine someone forking over cash for a tag with no brownie phys rep included, and it has no real IG effect.
If you allow untagged brownies to be sold, but not stolen and treated as personal items like other phys. reps, that's cool, but here are a number of ways I can see this abused:
1. Steal coin, pay for brownies, steal coin again. -Effectively stolen brownies.
2. Bring brownies, sell brownies, demand phys. rep back. -If tagged or otherwise. The difference being that as an untagged item, I can just turn around and sell it again. If it's tagged, I only have as many sellable brownies as I have tags, and it's in my best interests to just sell the damn things.
3. Undercut other brownie sellers by giving away free brownies. -Economic destruction.
4. Bring a slew of juice-boxes, brownies, cheese-sticks and other snack items, establish an IG snack-shack and turn a huge profit IG without ANY IG investment. -Own the economy. You can gain coin by donating to the game directly, or you can cut the game out and gain more coin with less OOG cash. Gee, whats the more frugal choice?
5. Buy out someone's entire stock, sell that stock at inflated prices. -No set value means nobody can say you're wrong or unfair.
6. Steal coin, pay for brownies, steal coin again, sell brownies. -Stolen brownies + Profitable business venture.
7. Slander brownies IG, convincingly run a counter campaign against brownies, mentioning, IG, that they made you sick, taste like dirt, etc. -Destroy credibility. Without tags or rules, there is no way for players to verify this save by buying a brownie anyway.
Keep in mind when I say "brownie" I'm also talking about other food stuff, drinks, clothing or garb items, weapon phys. reps, etc. If it's sold for IG coin, and not tagged as IG, it no longer follows OR is protected by the same rules as tagged items. Just because I can't steal something doesn't mean it's not susceptible to being gamed, and while I wouldn't blatantly do something against the spirit of the rules, if I, as my character, see you making free money off something that for some reason I cannot steal (magic!), and that you don't seem to run out of or have to pay any cost for, I'm going to find a way to bring you back down to my level: dirt poor and financially worthless because that's in his nature. You work for what you have, or you don't deserve it.
It brings up roleplay concerns, cheating concerns, and concerns about what constitutes fair or unfair advantage. At least in my opinion.