LaGranja, My First Tempranillo

In my quest to expand my wine experience, I went out looking for a Rioja. It's a Spanish wine made from the Tempranillo grape. I've never tried it, and wanted to. My first time out, I didn't find a Rioja, but I did find a LaGranja also made from the Tempranillo grape. It was very inexpensive, $3.99 at Trader Joe's. But it got a good review on Jason's wine blog, a good wine for the money. I opened it the other night. It was extremely tannic as in coated my mouth with a thick, dusty, dryness. I let it sit for an hour, then tried it again. This time the front of it tasted like sour rhaspberries in vinegar. The finish was short and mucky-muddy. You get what you pay for, but I don't think I even got that. Next time I'll try a real Rioja.