how about this - one time $100 refundable fee for lifetime of use - you can get $100 back anytime you wish and end the service. of course the $100 you get back will be worth less due to inflation, and the difference is what covers the service.

nostr:npub1acg6thl5psv62405rljzkj8spesceyfz2c32udakc2ak0dmvfeyse9p35c

i know my girl nostr:npub1a2cww4kn9wqte4ry70vyfwqyqvpswksna27rtxd8vty6c74era8sdcw83a will approve of this ingenious scheme !