I don't even think they sell VHS tapes anymore (I have an old one).
Lots to choose from at both Amazon and Radio Shack.
http://www.amazon.com/s/ref=nb_sb_noss?url=search-alias=aps&field-keywords=vhs+tape
http://www.radioshack.com/search/index.jsp?kwCatId=&kw=vhs&origkw=vhs&sr=1