My experience:
I bought (and paid) a couple of sets of drive rails for my Amiga 4000T on the 3rd of March. I have been waiting for some time and they didn't arrive (shipping to Italy). About on the 20th I wrote to Boogiegail asking if there was some tracking code available, because I still didn't receive the items, and she replied there was no code available but I should have received the items soon.
Today I found an envelope from the USA, the drive rails! But the date of shipment was the 21st and it was the date when she replied!!
I was going to leave a neutral feedback for the delay (probably she would have never shipped if I didn't complain) when I learnt she is not an eBay member anymore... LOTS of negative feedbacks lately!
Overall, I have been quite lucky.