Cubie wrote:
This might look like a very stupid question, but it would be great if someone could answer this.
Is it mandatory to choose the additional GMAT products (such as GMAT®Official Practice Exams 3-6) at the time of registering/scheduling the GMAT exam? Or can I purchase them later on if at all I need it?
Hi
CubieIt is not mandatory to purchase additional GMAT products, such as GMAT®Official Practice Exams 3-6 at the time of registering/scheduling the GMAT exam.
Of course you can purchase them later, if you decide so.
Nothing is mandatory in GMAT prep

However, I would strongly advise you to purchase them since they are the best possible thing on market and most realistic.
None of the third party companies that you tried (I suppose free test only) can match GMAC standards.
They only come into play, when you have exhausted all official materials and want more, for some reason.
Speaking of that, after GMATprep and additional paid ones 3-6, next best thing are Manhattan and
GMAT Club tests.
If you need to spend more $$$, invest there.
Kaplan is also praised to be similar to GMAT standards, when we speak about their mocks.
Kaplan books are rather easy, more for starters.
I don't find
Veritas to resemble GMAT standards in terms of practice questions/mocks.
If you need to cover more basics/fundamentals in theory, then
Manhattan books and GMAT Club sources are best way to go.
Finally, if you decide to take online course I would pick Manhattan, but you may check here reviews and decide for yourself what works best for you.
They all offer trial periods so you can try them.
Regarding you goal, 730 is enough to get you admission to any school on planet.
You can find more about that and corresponding facts in majority of my posts/replies, here is an example, but feel free to browse for more:
https://gmatclub.com/forum/is-730-on-gm ... s#p2098634Good luck and happy prep !