So behind, have been reading but no time to write anything. Will squeeze in at the end here.
Going back a few days, I agree cost is a massive issue. I guess part of the problem is official supply - I was shocked that LWC only accept 5% of prospective donors. Loads must be screened out for fairly minor reasons. Which is maybe what you expect at 1K a pop. I don't know if I'm suggesting "lower grade" sperm should be available for less money. But at least there should be a more affordable way of getting yourself inside a recognised legal framework of you want to.
I'm not sure I think there's anything wrong with getting sperm off a random website. No better or worse than getting pregnant with an unreliable male partner/acquaintance. It just wasn't for me and it's a shame if people have to make that choice based on cost.
For me real co-parenting (as opposed to just buying sperm) is a totally different thing. I can absolutely see why people do that - I know a single woman who's done it with a gay male friend. I wouldn't want to do it with someone I'd recently met from a website, but again it's not wrong, it's just not for me.
Pickle, agree with stork re jabs, it will be fine, would just say that a surface to balance things on is useful if you are mixing.