Guys I need some advice

Here is my problem:

I have decided to redo my den over, the previous owner put down these floors from Home Depot only 3 yrs ago and I like them but i am also removing the closet..its 80 sqFT..BUT does not have this flooring,

So im just wondering if there is a place where I can get the same flooring or am i out of luck and have to redo the whole den over with new flooring(360sq ft)..

I have half a box left, here is the info:

Harris Tarkett Vanguard taptight USA5904 oak wheat
9/16" thick x 7-1/2" wide x 47-1/4" long, per box its 14.75 sq ft

Would oak wheat from another company match mine? or does it have to be from the same company?

Another thing that i was thinking.. can i just get the same kind of wood(width,height,etc) place it down in the needed area, then just get the whole floor resanded and stained.. that will still be cheaper then replacing the whole floor? No??

I went to one wood flooring place and they told me that it will be better just to redo the whole floor over again.. Either way would require the same amount of work.. is this true??

Call the manufacturer. I believe that is a HD exclusive, and may not be found locally.