Improve Free/Trial/Entry level offers
£150 for 30 days is not long enough to get up and running and to make a viable website/app to cover the costs.
-Allow users to use the free credits over 12 or 6 or even 3 months.
-Or return to your previous offer with free monthly credits for a year.
-Or offer SSL on the shared plan. (sites without SSL are not an option)
£50-£60/pm for a basic website with custom domain and SSL is ridiculous.
I really hope you can review your current offers and make Azure a better choice.