A new method, make 5.000€/month easy

James, got Skype? Add me - JonoSEO.

Offer a free or trial value added service every once in awhile to retain customers, and offer bundled services for those pains in the arse that want the cow for free all the time. As long as you outline what they will get and give them just that and use effective sales approaches for additional services, this can work.

I don't understand why you want to do so many work/management for not much money. It's not hard to get a client to pay you $200 to do SEO/Website or whatever.

It's wayyy easier to manage and build a relationship with one client that pays you $200/month than 13 clients that pay you $15/month.

Here is how I will do it.

Ask them to Buy web Hosting through your link. ($100 comm. for free)
then ask for $10/mo as maintenance fee.