I'm a Kayak Camper, so pack weight isn't so much of an issue. Which is fortunate since this rain fly has a little heft to it. Not a whole lot, but it's easily the heaviest piece of gear making up my hammock shelter. The tarp completes my set-up and is very much appreciated. Just the difference of having a wind break is worth putting a tarp up.
I've just now got this tarp in the mail and I immediately set it up. Here are my initial impressions...

Beyond the pack weight, what struck me most is in the quality. The material is dense, fine thread treated ripstop nylon, with a small mesh locking weave. The fabric should be very tough to abrade & tear. It's well trimmed, with taped & sewn hemming all around & a double sewn ridge line. There's 9 anchor points around the hem, one in the tarps center, with solid sewn backing tabs and heavy duty plastic D rings. I've fit two spare carabiners to the ridge line points to attach the tarp directly to my hammock support straps.
The 12' tarp extends well over a foot at each end of my Fox Outfitters double parachute hammock. Even with the tarp's peak at over 6.5', the sides extend well down below the hammocks hang, and blocks any breeze from blowing across the hammock. Anchor lines are high visibility para cord with tensioners. The tent stakes are anodized aluminum with 3 notches & each stake has a high visibility cord bite tied on each end, making them easy to spot & pull out the ground. Good attention to detail there, although, I only wish there were more than just 4 stakes included.
Two tie points along the hem have tie lines but no stakes, although I do see how those two points may be best anchored to something off the ground to open the sides up. Not anchoring the two points mid way along the sides tends to let the sides come in or out when a breeze comes up. I'll be getting two more anchor stakes to fill the need.
Beyond all that, under the tarp there's plenty of room under cover, protected from the elements.

Since I just got the tarp and have only set it up I can't describe how it will be in the rain, but obviously from what quality I see in it now, I have no doubt the tarp will easily keep things dry.

Is it worth the price? Absolutely! Outside of adding two more ground stakes & not being a fly-weight tarp to pack along, I can't find nothing against it. If you don't have a tarp & need one, or if you need a tarp, but don't have a lot to spend, definitely buy this one. It's worth the price & more.

October 2021 Update: Since my purchase in 2019, the tarp has lasted three summers of HEAVY use. I'm replacing the tarp not for any design defect, but for that the accumulated months of sun exposure has weathered the fabric & made plastic eyelets brittle. Nylon & Plastic can only take so much. The fabric has developed tears, & leaks. I've certainly got my money's worth from it.
I won't be buying another though. Instead, my next tarp shall have metal eyelets & stouter web strap attachment points, no more plastic to break. I may spend more accordingly, but for my use, it's needed.
THIS TARP IS STILL A GREAT VALUE. It's just for me, not able to go the distance.

I loved ours we used It one time so far and hope to use it a lot this winter!

Have a couple of the Gold Armour tarps. Like all the tie down points. Allows a lot of different configurations. Bought this one simply because it matched our tent. Every Gold Amour tarp we got has been strong, and waterproof. Goes up before the tent does, in case it does start raining. Always tie the guy lines thru the loops, and poles thru the grommet hole. Never had one tear out yet. Even in some gusty winds. Well worth the money!

I have a camping trip coming up in August and I wanted an ultra light weight rain fly. I just took a quick look to see what it looked liked. The quality seems very good. The product appears to be as advertised and appears more durable than I was expecting. I will come back and update my review after using it on my trip but so far. Very happy with the quality.

I bought the 12x14 fly to mount over my aging, water-seeping gazebo, and the large size was enough to keep the rain off the entire brick patio as well. No more covering patio furniture every time rain is forecast. Tent pegs are aluminum and high quality, guy ropes are the brightest dayglo I'd ever seen. Love the high count of tie-down points, Good product so far, will keep an eye out for uv degradation and update review.