Others say...

"Good enough"
Save you gas, plus the local stores are ripping you off. Hope to see a Brita unit for Samsung soon, these sole source parts can be priced a little high.

"Works as expected"
Works as expected. Lasts about 4 months rather than 6 months though.

"Samsung Aqua-Pure Refrigerator Water Filter (DA29-00003A, DA61-00159A)"
Well according to the company I originally purchased this product from, they no longer make the 500 gal. model (but it is still being offered according the the model numbers). Anyway, the 300 gal. model which is apparently the only one available anymore has a slower water flow than the 500 gal. model; I suppose they both would have their pros and cons then, the 300 gal. takes longer to fill up my water cups from the fridge but on the other hand when it hits the ice in the cup I don't have as much splash. The 300 gal model appears to have the same expiration time of 6 months.

"Good Price - OEM filter"
This is the one you need for your Samsung refrigerator and this is the best price I've found anywhere on the web.

"Excellent product - quick shipping"
I purchased two of these filters as replacements for my Samsung fridge. The part number shipped was the DA29-00003B, which I think is also compatible with the DA29-00003A as well. It worked flawlessly in my fridge (Model RS2556SH). I recieved my order in the mail 3 days after purchase (regular USPS delivery)!
They are brand new genuine Samsung filters, which is a great deal for the price. The local Best Buy was charging $45+tax, so this is a good bargain.