Great question Lynn!
I'm very transparent about what tools that I use for my biggest million dollar clients (one such as http://krakenkratom.com who I work for as an SEO full time)
Other notable mentions include a great Chrome extension called "Keywords Everywhere," which tells you search volume for any keyword and CPC for that keyword. Wappalyzer and Dataynze which uncover the technologies how a website is built, what apps/extensions its running, along with other very useful information.
Note that all these tools could run you easily over $400/month but I do offer the same exact tools, which my expertise knowledge of how to use them, and provide you with the same data for only $15/month.
I have been reading the whole discussion, and it is alot of interesting things that i will work on, but my problem is, i have had over 1000 visitors only the last 3 months and no sale at all, I havent had even one sale since i started my shop.
I have no idea why and wondering if my prices is to high or what else can it be that is wrong with my site. I dont think my prices is to high, because i offer "free" shipping over $100 but because of that i put the prices up just a little to cover some of that cost. maybe i should drop the free shipping and go back to my normal prices advised by my droppshipper?
Would you be able to take a look at it and see if something is wrong?