Variants Listed but no prices showing

I have listed a POLO SHIRT for sale.
I have added some variants - sizes from S to 5XL
The original POLO SHIRT is model NWS-PS01 at I listed it at $24.94 and the (A) price at $19.95
Then I added the variants from Medium (M) to 5XL; each was assigned a new product number to differentiate between NWS-PS01. These numbers were progressively NWS-PS011, NWS-PS012, NWS-PS013 and so on. They were all tick as active and saved yet they do not register when I select the larger size variant with a price.

Any clues as to why this is?
I also cannot find the new NWS-PS011 numbers in the main product number selection area although the original NWS-PS01 is there

Thanks :confused:

Problem resolved using the trial and error method - thanks anyway