Parcelforce (RoyalMail) is £67 for 3.5kg weight to US insured to £500
Fedex is £68
DHL will do it, uninsured, for £52, plus the £3.95 P&P per motor to get to me... total shipping... £64
Sorry but can't do it cheaper.... need to find someone who is coming over to US...
BTW, if bought in the UK and shipped privately you'd pay VAT which makes then £18.30 each not £15.57