I saw no prices provided on Sintech's website, but another answer stated that his cost was $13.99. However, ferreting through one of the manufacturer's websites (Sintech) provided in this answer led to this page of macbook SSD adapters which may be of some use. Some of the links are now broken, meaning some of the recommended adapters and sources are no longer available. That Q&A pertains to a Macbook Air early 2014 which requires a different adapter than your Macbook Pro 2015, and Your question has now been closed as duplicative, but in reviewing the duplicated Q&A, it will be noted: Making this still more difficult is the fact that Apple changed the SSD interface design periodically, and so the adapter required may be unique to a model or model year. In other words, you can only re-use an Apple SSD in another machine IF you have the correct adapter.
Apple's proprietary design of the SSD's connector/interface means that an adapter will be needed to use it in a device with one of the industry standard M.2 interfaces. But as has pointed out in his comment, as a practical matter, the answer is: 'It depends'.
