Billy, the figures you have used are for 2.3Kg

If the costs are directly proportionate, 1.5Kg would be:
~$70 for standard membership
~$49 for premium membership

ok then, using the sh500 increment for each extra 0.5kg, we'd have for 2.0kg
DHL -> $67
myus standard -> $106
myus premium -> $75

So still I ask how exactly is this cheaper?

And still on the issue - why the discrepancy in charges between the Nairobi DHL Service Centre and this http://www.borderlinx.com/m/total-cost-calculator ?

-Billy