Aggregator business's liability when gathering information from websites

I am planning to start an online aggregator business in the UAE, specifically for electronic goods. i.e. when you search for, say, a mobile phone on my site, we will gather the information from all other platforms and let you know where you can find the cheapest one.

I want to know: am I legally bound to tie up or inform the e-commerce websites whose links we will be using?

Example: if you search for a phone on the website, we will compare and show prices of it on various platforms like Emax, Amazon, Noon, etc. for you to choose and make a choice.

So, legally, where do I stand? Do I need permission or not? Since we are not selling anything so it is not under e-commerce rules.

Please help!