Ditto on what he said...you can get led strips on ebay for pretty good prices....Personally I wouldn't buy from a seller who can't even post pictures of their actual product and a more descriptive detail about the l.e.d.s that come with their kit.:? As for that kit,without that info. it's kinda hard to say if it's a good deal,or not.
Browsed 12v LED in the search and found these in two secs:
48cm = about 1 1/2 feet.... that;s alot more light than 4 inch led pods (x4)