Trouble with Price Display

-- url of the page with the problem -- : store.everjoy.com/index.php/hikashop/str...on-violin-string-set
-- HikaShop version -- : 2.5.0
-- Joomla version -- : 3.4.3
-- PHP version -- : 5.4.40
-- Error-message(debug-mod must be tuned on) -- : n/a

Hello, came across an issue while importing products using CSV.

1. If you take a look at the URL of the page with problem, you can see that for all the variations the price is not showing at all. What happened?
I have another page uploaded with the same CSV but the price display is fine:
store.everjoy.com/index.php/hikashop/str...nt-violin-string-set

2. For the above URL (not the page with error), how do I display both common price and a store price for each individual variants?

Thank you for your help!

Attached is the CSV for question 1

Hello Jerome,
Thank you so much for helping.

1. Yes that does seem to be the case that if the variants are also the same price, the rest will not show. So no more questions regarding this.

2. How would I perform the view override? If you could please provide a step by step (hopefully relatively easy) on how to do the override that will be great!