Question about buying products without knowing for sure if they will work properly
Hey guys and ladies.
So DAZ has several interesting products, for example, I found one called “drop generator” that looks really decent and I want to use it in some renders. But with the experience of a few years using the program, I know there's a huge chance that the product won't work properly in some of my scenes...
What do you do in these cases? Do you buy products blindly? I know there's a refund period, but I also know that online stores don't usually like it when people start using refunds as a way of "returning" digital products they don't like.
What is the correct procedure in this case? Thank you.

Comments
In theory, if you are running the latest version of Daz Studio, then any recently-released product SHOULD work. Obviously there are the instances where people run older versions due to the need to support older hardware, drivers or for other reasons. If this is why things don't work for you often then it might be best to specifically ask if someone has used it on whatever version you are using? The best place would be in the official thread for that product: /forums/discussion/708416/released-drops-generator-commercial/p1
The official thread does have 3 pages of comments and so would probably be best to read through anyway before purchasing to gather more info.
There isn't really a "try-before-you-buy" mechanic other than buying the product and then requesting a refund if you change your mind within the allocated timeframe. I've not needed to use that option before but from the reports I read it usually gets handled without issue. No doubt if you use that option excessively that might change I guess.
You can read about Daz Refund policy and how to ask for one here:
https://bugs.daz3d.com/hc/en-us/articles/115003500163-What-is-Daz-3D-refund-policy
I don't know what threshold you have to pass to see Daz refuses a refund but I'm asking for a couple of them regularly and I have yet to see one rejected, regardless of the product I wanted to refund.
Buying and asking for a refund is the only way to test a product yourself, but like @SofaCitizen said, when it's an older product, you can also read about them if a support thread was created (only some PAs are creating a support thread). You can also open a discussion to ask if someone has a product you're interested to buy and what their opinions about it are.
Doing all that should reduce the risk of being disappointed by a product but as long as you're asking for it in 30 days after purchase, the refund is here if you're unhappy with it.
About the drop generator, it should work on any surface and at worse, you can use primitive objects like planes if a surface is not available for what you want to try or not reacting as you want.