Consumers can purchase troll dolls at online auction sites such as eBay, from novelty product sellers and from private collectors. Price ranges for troll dolls vary depending on age, design and desirability among collectors.

Troll dolls were a huge hit in the 1960s when they were the second most popular dolls behind the Barbie line. The most prized trolls are Dam Things, which are the original version designed by Thomas Dam. Collectors consider these dolls to have the best character features and clothing styles. Dam Things were made in small and large sizes, but it is very difficult for modern collectors to find smaller sizes. As of 2014, authentic Thomas Dam dolls are valued up to $700 each, according to Dag Original Designs.

Many troll dolls from the 1960s era are unmarked, making it hard to ascertain their value. According to, after the initial dolls became popular, the market was flooded with low-quality imitations. The 1960s troll craze peaked around 1966 only to be resurrected again in the 1980s and 1990s. The result is that there are around 14,000 types of troll dolls of all shapes, sizes and features. Among the rarest of all troll dolls to collect are various animal and two-headed varieties.