According to the search results, the value of a Magma Snail in Adopt Me varies depending on various factors such as market demand, rarity, and age. However, it is generally considered an Ultra-Rare Pet. As of September 15, 2023, it is worth a little more than the Christmas Gift. It can be obtained by placing a Campfire Cookie Bait into a Box Lure or a Cozy Home Lure furniture item, with a 1.49% chance of obtaining one. The Neon Magma Snail is a rarer version of the Magma Snail, and its value can also vary depending on market demand and other factors. It can also be obtained through trading.