Subscription or fixed pricing?

I know what you're thinking, subscriptions every time, right?

Well...

I make eye-popping maps designed to put websites with dull-as-ditchwater Google maps to shame. I'd like to offer these maps to end-users for a monthly subscription.

But I'm thinking I should make an exception for web designers, and charge them a fixed price for each map that they embed on their clients' websites.

Here's my reasoning:

• Web designers often charge their clients a fixed fee to create a website, so would be unable to pass on the cost of a subscription.

• Web designers know how to build websites, so would need less support to embed my maps.

• Instead of selling my maps to end-users one-by-one, I could sell them once to a web designer, who'd then sell them to each of their clients. It seems right to reward web designers with better pricing for bringing in all those customers.

And here's my worry:

• Charging a fixed fee rather than a subscription will make it difficult to cover the ongoing costs of developing and hosting my maps.

Should I offer a fixed price (rather than a subscription) to web designers?

I'd love to hear what you think!

(Thanks for your patience with my posting this again, since I realize that no one was able to click on it last time due to a glitch where you can't click on posts with links!)