I choose my shipping options as to which best suits the buyer location along with weight & type of parcel to be sent. I sell from a number of online platforms. I have accounts with Australia Post, Fastway couriers & Temando. Temando offer a comparison chart with dozens of services, any of which I could choose & pay for by credit card or Paypal. This would negate the comparison charts as you propose. Once I choose a service on Temando, I can then book & pay for the service all from the one website. I do believe Temando have won many business awards for the service they provide. Good luck with your student survey. May I ask what area of study is accumulating the data? As I have participated in a similar one with regards to online selling & freight from NMIT business students a few years ago & was kindly given a copy of their research findings for my records.