Samsung Galaxy Tracfones

I have had my Samsung Galaxy On5 since November, it was less than what it’s offered at now, more flex pays when I ordered, etc.. I love it, no complaints, transfer of number and acrtivation went smoothly, and I know it’s a lower end Samsung, but is a good quality. But I noticed about 2 weeks or so after I had purchased it, it may have been before cyber Monday sales, that they offered a pretty similar and new Samsung Galaxy Sky with the super amoled screen, with 16GB. Why is that one $20.00 less than the one I have? Also Is mine still eligible for Holiday exrended holiday return?