Another update -
They asked by email whether I agreed to the cost, and I replied that I agreed but needed to know how to pay them. They didn't reply but went ahead and put them in the mail so I was very pleasantly surprised to find them in my mailbox! The only downside is that the instructions with the documents requested that I wire money to their bank, and there's of course a bank fee for that. I was impressed tho that they were willing to send the docs without getting paid first.