Sometimes Wallyworld does have some great bicycle tires on red tag clearance. A couple of years ago I got two sets of the Bell Streamliners for under $10 each. Heck of a price for a wide 60 TPI tire that rolls so smooth.
I' can't remember for certain but in the back of my mind I think you can call Huffy customer support and order parts for particular bikes, including tires. With Pacific Cycle products, and Kent as well, I do know you can do that. Although Huffy is a separate company from the Pacific, or the Kent, umbrella of brands. You could always contact them and see if possible and what the cost would be if so. Of course the Nel Lusso is not to to terribly more expensive than the Cranbrook and therefore it might be more cost effective to buy the bike or find a similar tire elsewhere.
On a side note. I have a Huffy Regatta that has the same basic frame as the Nel Lusso but came with a Nexus 3 hub setup and pannier bags for the rear rack. I always figured the cantilever Chinese Huffy frames where all the same size. A few months ago I got curious about that and measured the top tube on a Cranbrook that was given to me a few years ago and then the Regatta. Shockingly, to me at least, the Regatta top tube measurement was quite a few inches longer than the Cranbrook. My memory is so bad I can't remember the exact difference now but I believe it was two inches longer from seat tube to head tube. I need to remeasure now to be for certain. Makes me wonder if any other sections of the upper model Huffy frames measure different from the low model Cranbrook.