First, set up a survey on Google Surveys (https://www.google.com/analytics/surveys/) and select the most appropriate audience for your concept. Set the first question as a screener of who you think this product is for. So if your business wants to sell to pet stores, you might set the audience to "Small Business / SMB owners" and have the screener question be "Do you own a pet store?" and screen out anyone who says "no."
Then, briefly describe your product and ask a straightforward question about how much they would pay for it. So, something like "What is the maximum you would pay for a service that handled the logistics of mailing pet food to your customers?" Then make the answers to that question your possible price points - "$9.99/month", "$19.99/month", etc. Make sure to include a "I would not pay for the service" or "$0" option - this is an excellent gauge of whether or not your service is actually something people will pay for. If you run a pricing survey like this and 95% of people say $0, that's pretty telling.
When you look at the results, you'll see a clear curve from the higher prices to the lower prices / not interested option, but you'll be able to see what a relatively targeted group would pay. So if 40% of people would pay $9.99/month, and 10% would pay $79.99/month, that tells a story you can interpret into a basic pricing strategy.
Depending on your budget, run 3-5 of these with different prices, different pricing anchors, different wordings, etc. - get as much data as you can.
I used this method for my last startup, when we were trying to figure out how much a specific niche would pay for our product. The pricing research we did through these surveys led us to a conclusion of about $29 per product, which was actually much higher than we had anticipated (we were going to sell it for $9), so we priced it 3x higher than we were going to. Very long story short, we made the right choice - people bought it and we had very few complaints about pricing too high. We even raised prices eventually after adding new features.
Now obviously, there is a delta between what people say they will pay and what they will actually pay, but this method might help get to a starting point, or add a layer to your existing research.
Admittedly, I do this sometimes when I have random dumb ideas for companies and I want to see if there's a market for it without really committing anything.