I placed an order for an Inspiron 3891 on October 1st, for delivery on the 14th. Unfortunately, the order was delayed and now has and estimated arrival date of October 26. However, I see the same on the website with free next day delivery (if place) before 2pm. The only difference in specs is that the one I order has a 1TB mechanical drive and the one now listed on the is a 256GB SSD. That is it no other difference. 

I called customer service / Order modification team to inquire if I could just change my order to this new computer showing "ready to ship". The rep it could be done but the price could not be matched. My order was for $412 and the one showing on the website is $534. Mind you the only difference is the harddrive. That is it, the is no other difference. 

So my question is, is that ethical? 

If I pay $122 dollars more, i will get a computer sooner then that one that I originally order which was supposed to be delivered earlier anyway. That $122 is basically the slight variance on the harddrive. Does that seem right?