Started my first business in 1974, been going strong since. My business portfolio is varied. Recent focus has been setting up 10,000+ reqs/sec WordPress sites. Most hosting companies can barely make 10 reqs/sec. Anyone expert who tells you "WordPress is slow"... Do a 180 + run, as likely their incompetence is pervasive. For example, SERP Shaker WordPress sites I've been setting up recently clock in at 7,000+ reqs/sec. In November + December 2014, one of my clients ran sustained traffic, all day, every day of 100,000+ unique visitors/second on a $100/month dedicated server machine at a load of 5%-10% of capacity. If you site is slow remember, site speed depends primarily on the tuning of the server machine where your site is running.
There's no way to guess about this, as checks will vary across time.
For example, you might get a Barclay Apple card + they might check Transunion today + Experian tomorrow or both.
There's no way you can form any conclusion about this, which will last more than a few days.
You'll approach this by working with a Tax person in each jurisdiction.
Note: This only applies if you have a brick + mortar location, along with exact organization of the business.
Tip: Making mistakes can be costly. Don't believe any "experts" besides in-country Tax people.
Answers vary based on...
Time/Budget/Will/Expertise you possess.
Projects with $0 budget verses $10M budget have very different answers.
Also, Time comes into effect, as money always has a time value.
Say you have $1M LOC to draw on + you'd like the shortest path to a selling your company for $10M+, then this will also be a very different answer.
Start with your Exit Strategy + time target of your Exit.
Then work backward, designing offerings you create.
There's no point in this.
Said differently, this nullifies the use of promo codes.
With Amazon, there are near zero analytics.
You're only hope of crude tracking is to keep your promo codes private, only provided in specific email or direct mail copy, to have some sloppy guess about who's buying your product.
Best to also expire these quickly, because if you leave running for years, someone will pass this along to their list, which passes it along to other lists.
Long term promo codes dilute data to an unusable point.
Tip: Also, include some device on your product to drive people back to your site.
Since you provide no information, no clue as to how to structure this device.
Example: Say you're selling bagged Maca on Amazon. One each package you'll include something like...
Email email@example.com for a free recipe book on 101 Maca recipes + energy boosting hacks... in 101 easy to implement email messages.
Some device to collect purchaser information.
As Dan Kennedy says, "Explorers tend to return full of arrows."
In other words, good chance of failure trying anything new.
Do something old, with a new spin.
Tip: Read through Kennedy's books (I could 60+ on my bookshelf) about how to do... business spins... slapping a new face on an old industry/niche/product.
Connect with publishers of health magazines, write articles for the magazine (paid or free) using soft sell techniques to promote your products.
Or you could setup a Food Porn site (glitzy photos of finished recipes), where recipes skew toward using your products.
Likely several 100s of ways to do this + far more detail is required about your company to venture good guesses.
Really does depend on company design.
For example, take a mail system.
If you run an online company teaching people how to setup their own MTA to send mail... verses...
An online company which allows sending email through either an SMTP relay or API call endpoint...
These 2x companies do roughly the same.
1st company is worth near $0.
2nd company could be work $1,000,000s/month.
Tip: Hire a bunch of consultants for 1x hour each, providing them details about your company, asking for how they'd design the company for highest resale value.
Then mashup/combine/merge the best of all the ideas into your business design.
Tip: Always design a business backwards, starting with your Exit Strategy + all will be well.
Sure this is easy.
You'll require a massive amount of cash. If you have to ask "how much cash", then you won't explore AI.
Once you've determined your AI tech, then you'll go through a multi-year process of Knowledge Acquisition, where you extract knowledge of your entire manual process from every person engaged in the current manual process.
Begin training your neural nets.
After a few years... to a decade... you'll have a Poe'esque (Ala "Altered Carbon") level AI to do your graphic design for you... auto-magically...
I remember going through this process at MCI Telecommunications years ago.
Fairly straight forward.
Just took $1,000,000s of hard cash over a 10+ year period to convert their switching tech to AI'esque style logic.