Different Pricing in different views

Looking on different point I see different prices:

On the overview (logged in)
On the item page (logged in)
Overview/and item page (not logged in)
On the basket

Some of the differences confuses me. I would expect:

Possible differences are with/without markup, with/without VAT

Can somebody point that out. It's a little bit confusing.

Woody64

On the overview (logged in) - base price + VAT (EU countries) - default currency is USD
On the item page (logged in) - base price + VAT (EU countries) - default currency is tied to member's Country, EU = Euro, ROW = USD
Overview/and item page (not logged in) - base price + markup (no VAT until country is selected, default currency is USD)
On the basket - base price + VAT (EU Countries)

I think, therefore, I could be wrong :confused