bizarre royalties

The screen capture below shows the top part of my sales for August 2019.

There are a couple of things I simply do not understand.
1) Baybayin (6x9", 240p) costs €20.00, and earns €3.37€ of royalties with Amazon US (Vs €10.36 with Lulu), while Ancient Beliefs (7.44x9.68", 656p) costs €35.00, and earns €2.17 of royalties also with Amazon US (Vs €12.76 with Lulu).
2) Ingram GB sold 2 copies of Ancient Beliefs, but the royalties amount to €0.00!
Am I correct when I guess I should sell Ancient Beliefs at a higher price to get royalties proportional (€5.89) to what I get from Baybáyin?
Does the €0.00 mean that the payments for the books have not been cashed yet?

There are a couple of things I simply do not understand.
1) Baybayin (6x9", 240p) costs €20.00, and earns €3.37€ of royalties with Amazon US (Vs €10.36 with Lulu), while Ancient Beliefs (7.44x9.68", 656p) costs €35.00, and earns €2.17 of royalties also with Amazon US (Vs €12.76 with Lulu).
2) Ingram GB sold 2 copies of Ancient Beliefs, but the royalties amount to €0.00!
Am I correct when I guess I should sell Ancient Beliefs at a higher price to get royalties proportional (€5.89) to what I get from Baybáyin?
Does the €0.00 mean that the payments for the books have not been cashed yet?
Comments
http://www.lulu.com/shop/li-jung-yuen/kung-fu-scholar-methods-internal-strikes-in-100-days/paperback/product-23908600.html
Reflections of a Christian Kung Fu Master
The only thing I could do was increase the price so that any future sales might give me a buck or two. What that means, of course, is that folk are even less likely to buy a POD book - they won't spend $2 to buy the ebook version.
The $0 is probably correct - Amazon take the money, you get nothing. It's no wonder Bezos can launch cars into space.
http://www.lulu.com/spotlight/A_A_Cain
http://www.lulu.com/shop/li-jung-yuen/kung-fu-scholar-methods-internal-strikes-in-100-days/paperback/product-23908600.html
Reflections of a Christian Kung Fu Master
http://www.lulu.com/shop/li-jung-yuen/kung-fu-scholar-methods-internal-strikes-in-100-days/paperback/product-23908600.html
Reflections of a Christian Kung Fu Master
It wasn't until the sales were made that I twigged to the effect of exchange rates.
http://www.lulu.com/spotlight/A_A_Cain
The pricing can be a bit frustrating. As just one example, in order to make just $0.60c 'Everywhere Else', I have to set the price at $8.99, at which if a sale is made here at Lulu I make $4.40, and I have to say that $8.99 for a 112 page A5 paperback is too much. But what can one do about that? Nothing, unless one removes the ISBN to sell it at just a little above cost here.
Thank goodness for e-books.
http://www.lulu.com/spotlight/kevinlomas
My Books:
https://voidwheretaxed.wixsite.com/rockandfirepress/about
http://www.lulu.com/spotlight/kevinlomas