I can only speak for myself.I use the buro constantly.If I dont have a qsl manager to go thru,I use the buro.I qsl my contacts.The buro costs money,sure,but it isnt as high as a registered mail letter to USSR for 1 contact.So you have to wait a year.I have got them from 5 years back.That is just the way the system works.It would be nice if every dx station had a KU9C or W3HNK or W3HC ,etc to use,but they dont.