A Shetland Sheepdog (Sheltie) priced at 500 yuan is highly unlikely to be a reputable purchase; it's very likely to be a mixed-breed dog or a sick one. Generally, the price for a purebred Shetland Sheepdog will not fall below 3500-4000 yuan. Even in more remote areas, a purebred Sheltie will typically cost around 2000 yuan.

Purchasing a 500 yuan Shetland Sheepdog is not recommended due to the high probability it's a mixed-breed or an unhealthy dog. The typical price range for a purebred Sheltie generally starts from 3500 to 4000 yuan. In second- and third-tier cities like Nanjing, Hangzhou, and Qingdao, the cost for a purebred dog averages around 2500 to 3500 yuan. In more remote areas with fewer breed options, prices are usually lower, with purebred dogs being available for around 2000 yuan. It’s also important to note that specific prices vary depending on the dog's appearance and quality.
Shetland Sheepdogs with higher pedigree levels will naturally be more expensive. The more pure the bloodline, the higher the dog's price. Generally, for a typical purebred Sheltie with average appearance and quality, the price range is about 2000 to 4000 yuan. However, for show-quality dogs with dual pedigree certificates, excellent physical attributes, stable temperaments, higher social skills, higher intelligence and ability to adapt to demanding environments and training, the price will be considerably higher, usually not less than 10,000 yuan. If the dog has participated in major competitions and received awards or certificates, the price can climb to tens of thousands of yuan.
It is highly recommended that you purchase from reputable kennels or pet stores. Avoid being tempted by very low prices to prevent getting scammed. Remember, a healthy, purebred Shetland Sheepdog is an investment in a long-term companionship. Always prioritize the well-being of the animal, make sure that it comes from a good breeder, rather than just chasing after the lowest price.