You could split the order if you don't like buying from discounters:
1 Million and Burberry Touch from Amazon with free shipping (since their prices are lower than Sephora's for these two.)
Dior Fahrenheit and YSL La Nuit de l'Homme from Sephora with 15% off and free shipping.
Fahrenheit 32 ships free from Perfumania; their feedback score on Amazon is 95%.
Here are threads about Perfumania for you to research to help you decide:
YSL La Nuit ships free from Discount Perfumes. I didn't find threads discussing Discount Perfumes but they seem to have high ratings on Amazon. If in doubt, you could start a thread asking if anyone has opinions on this seller, posting the thread on the following forum: