A top 1% vendor will be VERY busy so expect longer times for responses and a 1g order isn't going to be that high on his priority list (no offense intended, just being honest with you). He will get back to you eventually, if not drop your feedback to 1/5 and see if that motivates him. If you FE then you are out of escrow and SR cannot help you, you assume all the risk when you FE.