How much will the average cost be for 1000 grafts?

It is a question with multiple answers. Basically, the cost of a hair surgery depends on couple of criterieas.
- Dr's and clinic experience in this field.
- Where the clinic is located as the labor and other costs are different in each country.
- The difficulty of your case. (number of grafts to be used)
Apart from all price should not be your only concern. Of course it is also a budget issue but please do not forget that it is your health and physical appearance that you are risking.
In my practice, average hair surgery cost roughly between 1850-3750 Euro range and it includes the travel package such as accommodation, local transfers, and language assistance.

Surgery cost varies from doctor to doctor, location to location, and technique of harvest.I've seen as low as $2000 to as high as $10,000You should focus on the end result more so than cost as not all hair transplant surgery will give you the same end result.  As the saying goes, "You get what you pay for."

What is the cost of a bad hair transplant?  That is the real question. You need to get a doctor who is well recognized in doing this type of work. Reputation and experience are priceless. Hair transplants are forever and cheap hair transplants turn out to be the most expensive as I repair them all of the time

It depends on the doctor and the hRvesting technique.  Usually around 4000 to 10000. If you have a doctor in mind you can call and find out.