I'm in pretty much the same boat.
02/16/14 I send a PM to ask for an invoice, because the thread had closed on 02/03/14 and I had not yet received an invoice.
02/19/14 Received response that he had been busy and gave me an invoice, which I paid within the hour, and immediately notified him of the payment.
03/09/14 Almost three weeks later, after no response, I asked for a shipping update.
03/11/14 Received tracking number.
03/15/14 Received the box, but was missing a Bloodstrike lot (Bloodstrike 1-17, 19-21, 25 $5), of which I notified jaster-mereel that same day.
03/17/14 Got a response, saying he would check it out and send it.
03/26/14 Asked for an update.
03/27/14 Was told he found the lot and they were on the way as of yesterday.
04/09/14 Asked for tracking number. Message read, but no response.
And that's my story.
I know, it's only $5, and I have no complaints about the condition, packaging, or price of the comics I did receive (I think over 100 total at just over a buck each or something..) Communication and speed leave much to desire, however. Sorry, but that's just the way it is.