Here's the basic information on Invitation letter to Ukraine: a tourism invitation letter (for max 1 month stay in our country single entry) is 100 USD and we do it within a couple of days. A business invitation letter (for 1-6 months multiple entry) costs 400 USD and is processed within 3 weeks. Urgent business LOI within 4 working days will cost extra 50 USD.
To make it we need from you:
-scan copy of your travel passport (1,2 pages)
-scan copy of previous visas to Ukraine (if you had visits to Ukraine before)
-filled application form (will be sent by request)
-return air ticket or it's booking
-prepayment 100%
All additional payments like posting a letter by DHL to your country or money transfer to Ukraine should be paid by you additionally.
If you need any additional information do not hesitate to ask by e-mail