Well for 3 motors, 1 ESC, 2 lipos, and 2 low voltage alarms, the postage was $23 (around £14) total payable to HobbyKing, was approx. $115 (£70-75), I think it said there was an extra charge for paying with credit or debit card, but I paid using Paypal, as for customs charges, I think it's luck of the draw. This is the 1st time I've ordered from HobbyKing (my order is from the HongKong warehouse), however I have ordered bike parts from USA in the past, was charged around £35 on a set of shock absorbers that cost £140, and then a 'ForceWinder' air filter kit cos nearly £200 and I paid no customs or anything.
As for programming cards etc has anyone got a link to a suitable card for the SeaKing 25amp ESC's? I don't seem to be able to set up my Mtroniks ESC's with my planet T5 gear, yet (until the receiver drowned) I could do it easily with my cheap GiantCod 2.4Ghz set...