Number 1 & 2 are pretty much self explainatory and have become or becoming the norm. You qualify for one due to great credit.

2. The PrePaid Visa much like the prepaid phone card such as those found at the mall like Simon gift card. You simply pay a small 2 dollar fee tell the clerk how much you would like on the card, hand her that amount. You instantly have a Visa with that amount to use, anywhere Visa is accepted.

3. The Visa gift ACCOUNT is merley a Visa online, you do not posses a physical card and I recieved mine in an email sent to me from my internet provider. I got it As part of the deal of signing up with them for my internet service. I got a $75 Visa or rather a Visa gift Account. In otherwords its an online only account and can be used online by giving the online merchant the Visa number over the internet. Incendently you can also use it over the phone, like I did when I ordered a large Pizza the other night over the phone. You never have to show a physical card, but you do posses the actual real authorized Visa # , expiration date and 3 pin security # found on all Visa plastic cards sent to you in the email from you internet servise provider.
You simply do not posses the physical plastic but only info you need to use it as i recieved from my ISP.

4. From my years online I have never recieved any other visa. Shady merchants online offer a visa as a tool of advertising and marketing to **** you into purchasing a product.
You go through the steps of qualifying typically by signing up for several offers that seem to never end, there’s always one more offer before you get the card. Even if you do finish and
qualify, the card never comes and when you question the merchant about it you are told that “You unfortunately filled out an old offer online, sorry!” they say “We can not catch every thing on the internet unfortunately some mirror company must be running an expired offer on their website.”
They say “We no longer offer that Visa.”
In otherwords you have signed up for 18 offers to get nothing! Beware its the oldest trick in the book! Shady merchants are notorious for offering it! You could probably beat it if you took them to court and they know this but they will deal with that at the time, for them for the moment to get you to buy products, Its all about marketing! If it sounds to good to be true it usually is!
Thers also the bank check card Visa, a debit card actually. Its simply a plastic visa card whereby each time you use it the money is instantly debited from your bank account. The bank might give you $100-$500 over draft protection. The card is what everyone gets when they open a bank account. Its not a Visa per-say with credit but Visa logo is on the card and it does allow you to use it as debit at most places.

First, if you have to buy A to get B, B isn’t free.

Second, this sounds too much like a phishing scam to me.

I’d avoid it.