Sku sku = new SkuImpl();
sku.setName("Test Sku");
sku.setRetailPrice(new Money(10D));
sku.setDiscountable(true);
SkuFee fee = new SkuFeeImpl();
fee.setFeeType(SkuFeeType.FULFILLMENT);
fee.setName("fee test");
fee.setAmount(new Money(10D));
fee = catalogService.saveSkuFee(fee);
List<SkuFee> fees = new ArrayList<SkuFee>();
fees.add(fee);
sku.setFees(fees);