Hi Mad_Missi,
I will do my best to address your concerns satisfactorily. Please refer to my answers below -
* Do I need the companies approval to advertise their products with a marked up price for Drop shipping?
Ideally yes, you need to register a dropshipping account to starting dropshipping a supplier's products.
* Am I allowed to use their photo's and descriptions of the product, or do I need to re-write it myself?
After you register, most if not all of them will readily allow you to copy both the product photo and description.
But personally, I would recommend that you update the product description to make your listing stand out from the rest. I mean we all know that many sellers will dropship products from the same dropshipper. So it would definitely give you an edge if you offered something different!
* Can anyone reccomend any AUSTRALIAN companies that allow Drop shipping. I want to open a variety Ebay store, so I am basically after any decent/sellable products.
Here are a few dropshippers based in Australia that may have products you are interested in selling -
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Hope this helps you off to a good start! All the best!
Cheers :)