DickiesMen's Relaxed Fit Jeans (B008S2F49Y_33W x 32L)

I want to be sure these are the pants my husband is searching for. The item #19294 is the ones he's wanting, are these the same item #?

Will they fit over Wellington work boots

Why are the 33w x 32l $28. But the 33w x 34L $17??

Are these their "straight leg relaxed fit" carpenter jeans that I see sold at Walmart? (these say relaxed fit but not "straight leg").