If you are going for the 65, to be part of a pure advisory firm, that is you do not have any other FINRA/NASAA licenses, this is the set for you.
There are many concepts that are covered in the SIE and Series 6 sets, that are going to be needed on the Series 65 exam. There may be some duplicate phrases as well, but as most of my students on the 65 have the other licenses, a lot of the review material from their ‘earlier’ licenses is not included on the 65 concept cards.
Normally the SIE is $38, the Series 6 is $28, and the Series 65 is $33, for a total of $99. Buy all 3 together, save $9!!