I just bought three DNA kits from their Ancestry website and as I am a Prime member postage was free.
Suggest you try taking out a Prime 30 day trial, then order the DNA kit.
It is a little more expensive to order via Amazon for multiple kits as it is £69 per kit instead of £59, ordering via the Ancestry website, you get charged £9.95 P&P for the first kit, then £4.95 for each extra kit I think, so that might have saved you about £10

. The deal to get the Worldwide subscription would only be via the Ancestry site.
Thanks, I've often wondered how much they charge for "shipping". It doesn't seem to give that information anywhere.
It doesn't Sloe, I think I usually just go through a dummy run order to remind myself usually. The costs for standard delivery (about 5 working days?) are as I stated above, express delivery (1-2 days) I think is £20 for one kit, not sure how much extra per kit

.