I'm also in the boat of wanting to pay shipping costs via PayPal.  I don't have any BTC yet -- that's kind of the point of buying this miner! :-) 

I've yet to find anywhere I feel comfortable registering my fiat details to exchange fiat for BTC, or those sites that look reasonable to me have weeks long processes for your first exchange, or they charge some very high fees when all I need is less than 1 BTC to pay for shipping.

I'm disappointed to hear you're thinking of making us pay in BTC for shipping when we were able to pay for the hardware via PayPal!