I've been a member in the beer ones for years. Happy to answer any questions.
1. Is there anyway to verify authenticity of the goods? Why anyone would trust this?
2. Many items you can buy without complexity of raffle and at lower price. So why even bother?
3. How does raffle makes it legal from non-legal from Facebook perspective?
With regard to booze: there is no way to truly verify or authenticate until you drink it against a known good bottle. For pricey bottles, most groups require detailed pictures of the laser code as well as the top foil measured against a ruler. Ultimately the only security is the attestation of references from previous transactions, but many of the large groups have been banned recently, which has been a huge hit to references.
E.g. The MSRP of Pappy Van Winkle 15yr is $99. It goes for $999 on the secondary market (as well as in 95% of liquor stores in CA). Many of the raffle pages offered a shot at these bottles for like $100 x 10 slots, etc.
AFAIK, it's only illegal to sell or ship booze. And again, AFAIK, it is not illegal to buy it second hand for personal consumption.
That's going to vary by state and country.
I clear international freight through customs for a living, a good deal of importing small amounts of stuff is on the honor system. Sure, customs will randomly search shipments but I can think of many ways I could increase the likelihood of an individual getting something past customs. I will share them all, or even elaborate in any real detail but these tare all data points that could be considered:
- country of origin
- Declaring it as a REDACTED and/or as REDACTED
- Sending it as REDACTED
Then there are methods of packaging that can also increase chances of avoiding detection.
Look, people ship illegal drugs internationally daily via darknet market purchases (I mean, open your DNM of choice and you can have a kilogram of cocaine shipped to your door domestically and internationally, clearly it's not all getting seized otherwise the listings would dry up as customers got burned), you also have gobs and gobs of counterfeit goods, goods from sanctioned/embargoed countries, etc all slipping by Customs (at least in the United States). A lot of it is purely due to the fact that, unless the inspect a package, it's an honor system "I claim this is what is in this box I'm sending to Bob in America" combined with the sheer volume of packages.
I mean, on average PER DAY in fiscal year 2018, Customs processed 95,890 entries  of merchandise at air, land, and sea ports of entry. Most of that, never gets reviewed by a human being on the end of Customs as a lot of it is electronically transmitted via ABI and if any number of computer decisions don't flag it, it clears within seconds.
While I can buy farmed venison, it's always red deer, and I vastly prefer fallow, far more tender and far less gamey.
But as I lack the time go hunting these days, farmed red is really my only option.
Just a gambling group.
I eat almost nothing other than food made at home. I guess the government must be very concerned about what that could do to my safety.
While people are certainly welcome to spin that wheel, it's disingenuous to equate the risks with home cooking.
I have spoke to chefs who say they re-use chicken that was dropped on the floor, no problem.
Somehow the government doesn’t prevent this:
The toppings don't get anywhere near the temperature of the oven. If they did they'd be horribly overcooked and taste dry and awful
I also eat pizza slice which falls off my hand on the floor in my home. I've dropped food on floor many times, I just don't like to see food being wasted, I am not poor or anything.
Infact, I am one of those people who rarely fall ill. Last year I had cold 1 time that lasted 2 days. Then there was a viral fever in my location and people were sick for 7-10 days and needed corse of antibiotics to clear as I got to know from my local doctor buddy.
I caught the same viral from some Amazon delivery guy but refused to take meds and it auto healed it just 2 days!
When I am about to fall sick, my appetite shots up and I feel very hungry then these small things always go away quick.