No offense to anyone who has posted, but I have to think that some of the posters touting the merits of inexpensive tripods (especially that flexible thing) have never used a good, high-quality tripod before because doing so would change their quality scale entirely. I've used cheap tripods (I still have a couple) and I've used good tripods. I can tell you for absolute fact that the difference in stability is immediately noticeable. In windy or unstable conditions there is no comparison whatsoever.
I personally prefer Manfrotto. Not because I feel that they are the best but rather because I feel that they are an excellent compromise between cost and quality.
Also keep in mind that just because a tripod has a reputable name on it doesn't automatically mean it is a good tripod. I bought one by a reputable tripod manufacturer several years ago and it was the biggest piece of junk I've ever owned.
+1 on this /\
My friend purchased a 4-section 'carbon fiber' tripod and I'm sure it was a decent deal, probably in the same price range as that Dolica. I thought, ok cool...carbon fiber, NEW...jealous. I'll still be happy with my Manfrotto 3221 and lug it around though. It's old but sturdy and I know I can trust it. I purchased it used on
ebay twice; I had a silver one with a gitzo ballhead that I paid $120 for, but decided I wanted it in black, and found a good one for $70, so I bought it and transferred the gitzo G1377M magnesium head onto the new (used) tripod. It's all about timing, I can't say you'll have that luck, but perhaps!
I went to my friend's house the other week, and as soon as I brought out my tripod the first thing he said was, and I quote: "Woah..."
Granted some of that may have been from the foam on the legs, but it's no slouch of a tripod.
He didn't USE my tripod, but it's bigger, and IMO significantly sturdier (I messed with his tripod a bit). Mine has 3-piece legs, eliminating 3 more points of failure and 3 points that could add flex. It might be heavier and longer, but I'd trust it more on a beach. I would never put $1000+ of gear on a tripod worth 50 dollars at the beach, even if you're next to it to catch the thing, do you want to be fumbling with a 4lb+ camera that's about to hit the deck on a
sandy beach because a cheap part snapped?
I'm sure you could get the 50 dollar tripod and be fine for a few months, but in time it will likely wear out much faster, at least possibly requiring a new head, or your camera might get heavier and make the camera shake. You don't want shake when trying to make a good evening shot of the sunset with a breeze kicking things around. I use a remote shutter release even on my Manfrotto tripod. I haven't done much beach shooting to be honest, but I'm sure you know how windy it can get that close to shore, having a ball head is ok, but if it's not an expensive ballhead (mine costs about 180-200 new), I bet you'll be cranking it down hard and it will still flex. Then it will wear out after all the tightening and re-tightening, and then you'll want to spend more money, not only because your camera wobbles, but because the finish on the head has become rough or it won't lock anymore.
Check out the 1-3 star reviews on any cheap tripod and see what the issues are, especially after a few months. I loved my 3221 but it took a month for the leglocks to break in after I cleaned it (disassembled all parts), and I discovered a leg lock was too loose. I was able to tighten that up easily (1/2 turn of a wrench..no big deal) but it took a month for it to loosen; imagine what might show up after 5 months of using a cheap tripod. Unfolding, folding, locking, unlocking, sliding, banging, dropping...etc. YMMV, but I'd recommend hanging on for a good tripod, and like it was said not just any tripod from a good name, manfrotto makes flimsy stuff too. For example, I was told the model under mine (3001 or 3011N or something) is smaller and too flimsy, which is why I bought the 3221. Someone told me the lower models wouldn't cut it for my gear and I knew I was only going to get heavier lenses, but just above my post unpopular said the 3001 legs are good, so perhaps that one is sufficient for lighter setups or it's the 3011N that's not so good, sorry I can't recall.
While I don't just want you to purchase this, here's an example of a similar tripod I just saw recommended in another thread, if nobody bids it will be around $110 shipped.
Manfrotto 3021PRO Tripod 719821175759 | eBay
Buy a good used tripod off
ebay or locally if you can, finding one with a stellar head is a plus too, you never know what you'll find! I've found lots of amazing deals.
Another tripod under $100 that I could see staying that way to closing bid:
http://www.ebay.com/itm/TRIPOD-BOGEN-3021-MANFROTTO-/170919270483?pt=US_Tripods&hash=item27cb951853