The best deal I could find for collars with receivers was ...
349461
We live in suburban area with homes having 3-10 acre tracts, with this product my pets stay where they belong and don't bother the neighbors. The wireless containment system works very well. I purchased the system for $229.00 at a 'big box' store about 5 years ago with one collar. I had to purchase a second collar for the other dog for $75.00, making my original investment a little over $300.00. The receivers on the collars last only about 5 years, I say this because they both quit within weeks of each other. The best deal I could find for collars with receivers was $110.00 each on Amazon, most other places they are around $150.00. They are expensive but they work. After the dogs learn to stop at the boundary, you can adjust the setting to beep only.
886381
The quality is low, the functionality is there for a device at this price point.
The tabs to hold the collar are a joke. The collar itself isn't worth using.

How I can still give it 4 stars:
I read others reviews, knew what to expect and decided I would invest myself a bit more than opening a $26 package and expecting the world out of it.
I went to the pet store and tired out a few collars with it and found a perfect fit. I also accepted my dog would be wearing 2 collars for a bit; wireless fence/leash and this one.
Our dog responded best to vibration and shock, within a month of working with her she was learning when not to bark. Soon after we were able to transition to a bark collar and now she has that and her wireless fence collar.
Every now and then we charge this system up and retrain her a bit, overall a successful system.
2330974
Collar snags and unravels but the rest works great
375526
I have been looking for a good olympic barbell collar for olympic lifting, which has lead me to try a number of items. The best I have found so far also damaged my bar (used screws to secure the collar to the bar), and the second best option seems to have been a pair of spring lock collars, though even those tend to walk out after enough drops. I first tried these during some front squats, and everythign stayed in place through normal lifts. I liked the method of tightening the collars down and hoped that with such a wide point of contact (1.5" maybe?) between the collar and the bar would help keep these secure, but I actually found the opposite to be true. After two or three snatches the collars had walked out maybe 2-3".

If you are planning to use them for bench press/squat/deadlift and the likes, these are pretty nice, and I will probably pick up another pair because they hold up under that environment without damaging the bar sleeve.

If you really want these for crossfit or olympic lifts, I would say your money is better spent elsewhere, though I'm not sure where as I have yet to find a cheap and effective solution yet.
4148757
Collar strap is stiff material and the receiver wants to slide on it.  But apart from that the unit works well.
807217
I purchased this product in conjunction with neodymium magnets after I lost the magnets for my Wurkin Stiff collar stays. Not wanting to shell out another $20 for a pair of collar stays, I decided to get these as they were a more economical alternative. Needless to stay the collar stays and the magnets work as intended.

More importantly the, customer service from Shacke was great. They noticed that I ordered 30 - 2.5 inch collar stays and they reached out to ask if I wanted that many of the same size and let me know that I can switch my order to the package that offers various sizes. Though I wanted all of the collar stays to be the same size, I appreciate their thoughtfulness.
4070178
I have to be honest, I'd never heard of this brand. I purchased these because they were on a lightning deal and our dogs REALLY needed new collars. Theirs were getting pretty mucky. I purchased the pink ones, one large and one medium.

It took a lot of figuring out how to put them on, exactly, because the collar wraps inside itself (through the silver ring). Once we got them adjusted, they looked very smart. We use harnesses to walk our girls (on a dual lead, since they are sled dog breeds and pull quite a bit), so I can't attest to the durability of these collars. I just know they look great. We did NOT put their dog tags on the little plastic clip that is built in. It didn't look sturdy enough to hold for two girls who grab each other by the collar and rip the heck out of each other wrestling. We've lost tags before and can't chance it, as Huskies are runners and our local shelter hasn't quite mastered using the chip scanner yet.
3155386
The girl likes her new collar. She feels so special now. The one thing I didn't like, is that it doesn't come with an area to attach tags. My husband managed to get a split ring large enough to go through one the material where you adjust the size. The receiver fit perfectly. I would buy this brand again.
1538009
I have purchased collars for three times this price that were not this solid. Good collar for a husky and the ring placement allows for the pressure to be more evenly distributed. Great deal!
213135
Great collar, and at a great price!  Also, really quick delivery.
3256779
We had to order replacement collars and parts, as our dogs chewed up the originals.  It was very easy to replace the old chewed up collars and place the receivers on the new replacements.  This is a great way to fix an investment, and they are now working perfectly.
1470629
Very pleased with these collars. The spring collars I had been using were annoying to the point that sometimes I'd do many of my warmup sets without a collar. These secure nicely and really lock the plates in place. I don't know how long they will last since they are plastic, but I definitely will buy again if/when they break.
637399
Great little kit for the money. Collar has to be charged each day.
4414226
Have had them for 2 months, so far the best collars I've purchased. I recently purchased the aetertek water proof system and and had 2 collars and a remote go out. Will let you know the outcome of this system, so far it's awesome!
2352563
Works very well.  Dogs chewed up first ones.  Had to buy two new receivers but company sent new collars - free.  Skip step two when you have to pair new receivers.
1363679
The price of this product is reasonable and its quality is okay. Especially its after-sale service is VERY good.

My receiver collar had a problem-the vibration mode did not work, the tech people replaced it with a new one right away when they received it back. I'm happy with the replacement.

The negatives are: 1. you have to pay the mail back fees; 2. the collar belt does not fit dogs with thin necks.
587006
It was a good fit after the adjustments were made. I would recommend it to others because going thru insurance would have been $230 for the collar; but this one was $60, same exact one too Great deal!!