There is no way that they sell 50.000 units per month. There are metrics to estimate the sales of a product. The easiest way is to look up the number of reviews at Amazon. With a product like Ring the most likely multiplier for existing reviews vs. actual sales is times 10-12. With almost 7.000 reviews you can estimate close to 100.000 units being sold so far. The product has been available for around 16 months. Even with much accelerated sales over time, there is no explaination for monthly sales in access of 10.000 per month. Unless you count the product sitting on the shelves of Best Buy and alike which have been technicaly sold by Ring but have found no buyer yet.
This figure is in line with other overall marketing techniques Ring has been using in the past. They scammed early adopters with a faulty product called Doorbot and failed to replace it with the new Ring model. They acknowledged that their first model was faulty and told early adopters to pony up another 100 dollars if they wanted a working unit called Ring. I used both versions of their product and tested other offerings like the Skybell und Doorbird as well. Here are some observations I made:
The third incarnation oft he Ring doorbell, formerly known as the Doorbot, seems to correct some shortcomings of this doorbell. While the first version (Doorbot) was practically unusable, the Ring promised a much better experience. But some design flaws prevented the Ring of being a good and practical solution. The most important flaw was the decision to base the design on battery use. In order to achieve at least a few weeks of use without recharging, the Ring was designed in a way where the unit has to go into a (deep) sleep mode when not in use. Every time you press the button or activating the motion sensor the Ring has to wake up. And this takes a couple of seconds. Several disadvantages derived from this design:
1. A long latency when between ringing the Ring a notification on your phone. Sometimes more than 10-15 seconds. So it regularly happens that people walk away before you have chance to talk to them. Unfortunately there is no way to initiate or restart the communication from your remote device (phone).
2. This fact leeds to the scenario almost everybody experiences with the recording based on motion. Before the Ring is up and running and recording, you see the peoples back while walking away from your door. The security aspect promised by using the Ring is heavily diminished if you cannot identify who was there.
3. The battery did not nearly last as long as promised, because the motion sensors sensitivity could not really be adjusted and the Ring was, depending on the actual installation scenario, constantly awakened from sleep mode.
4. The only way to connect to your network is WiFi. This alone adds to a longer delay when between ringing the Ring a notification on your phone. An Ethernet interface would have been a perfect solution to provide power by using PoE as well.
5. The biggest problem is the demand in bandwidth the Ring has. An upload speed of 1.5 Megabits is still a prerequisite not every access point provides. Combined with the forced use of WiFI which adds an overhead of needed bandwidth and other devices on your network using upload bandwidth concurrently, you would have to have at least 2 Megabits of upload bandwidth for a decent and stable video quality.
With the new Ring Pro design, not based on battery any more, quite a few concerns or flaws are now addressed or least addressable. Point 4 remains and if the Ring Pro made any progress on point 5 remains to be seen when the product is available.
One feature now possible is what Ring calls Life view without scarifying battery life. But Ring promises this feature to be implemented for the current generation of the Ring as well in two months from now. Based on the battery capacity the Ring has it seems that using this feature would mean recharging the Ring after a few days of use. A scenario you probably do not like while away from home for a few days and with no chance to recharge.
I have tested almost every device in this category, like the Skybell, the Doorbird and some no name Chinese products. The only product offering a stable technical solution so far is the Doorbird with a technical design avoiding the potential flaws the Ring and the Ring Pro has. The disadvantage is higher price point 349 vs. 249 dollars. The entry level product from Doorbird is much bigger than the Ring and has a typical German design you might like or not. There are versions of the Doorbird (series 20X) available, based on a stainless steel design, which rival the most sophisticated professional products. But they are in a different price category starting at 500 dollars. Given the fact that a doorbell is a product you might want to use for years it still could be a good investment. Having bought the Doorbot, the current Ring and possibly the Ring Pro it adds up the 650 dollars and still does not deliver what you really want.