Alpacas are a long-term commitment, living up to 20 years. Talk with expert breeders to learn about their care requirements, including enough land, vitamins, food, shelter, and fencing. Alpacas need to be kept in a group of at least 3 as they are herd animals and require the social interaction with their own kind. 
Decide what you want to use the alpacas for. Are you interested in breeding them for their fleece, showing them, or simply keeping them as pets? This will help you work out what type of alpaca you are looking for.
Find a breeder who will support you and share their knowledge and expertise.
When you go to see alpacas look for alpacas with good conformation. This means that the alpacas should have a strong body, straight legs, and a healthy fleece. The British Alpaca Society has a breed standard which you can find on their website

The price of alpacas can vary depending on their age, sex, quality, and bloodlines. Pet boys are the lowest price as they can not be used for breeding but should be well trained so they can walk on the halter. Breeding females will cost several thousand pounds and can breed more than 10 cria during their breeding life. Stud males are the most expensive and need to be correct in all aspects of conformation and have no defects that they can pass on to their offspring.
You will also need to factor in the cost of food, shelter, fencing, and veterinary care.
Owning alpacas can be a rewarding experience, but it is important to be prepared for the commitment. By doing your research and choosing the right alpacas, you can ensure that you have many years of enjoyment with these gentle creatures.

Buying Alpacas