Thanks for the advice. Yes, building a reputation is the hardest challenge when you have a once-off kind of product. Hopefully the low price can attract leads and we can start from there, although I understand that it can also backfire and make it look low quality and untrustworthy but we need to start somewhere. Our tool tries to explain each step in detail and also links to the specific Stripe documentation to help the user understand the process to build trust. The subscription transfer is done as a trial, following Stripe's recommendation.
> Hopefully the low price can attract leads
Honestly, a low price for a product like this makes no sense, and might give the opposite signal. Real, trustworthy businesses know what they're worth and charge accordingly. Businesses know that if this process screws up they could lose or over-charge customers and have to make refunds.
What's the alternative? Pay someone to manually move records over one-by-one. I'd estimate that costs a few dollars per customer. If you can be slightly cheaper than that, they'd be silly not to pay.