I knew the proper names because of the comic. However, when we began carbooting we did find some ponies not sold here, so we gave them very silly and basic names.

German Skydancer - Seagull
Baby Leaper - Froggy
Pink Dreams - Kitty..something. I can't remember >< Had names for the twins from that set too but don't remember either one right now.
Diamond Dreams was another one but I can't remember what we called her without checking my notebook to see.

My sister called Baby Ribbons and Hearts "Baby Christmas". I don't know why. She got her in July in an unmarked bag from Partners and we had no idea who she was, so.

I also named my white club newborn Beauty. It's really hard to not list ones for sale under that name even though it's only the name I gave her

I still use UK names because I grew up with them. For me whenever a UK person uses a US pony name they're still not using the proper names of the ponies I find it sad how many UK folk don't even know the real UK names for ponies, but sadder still for those who grew up with the UK names and yet still use the US ones.

The horn cutting off bothers me. It bothers me because basically it's superstition about magic, but gets dressed up by the people who do it as protecting Christian values.

No, US shelf prices don't include sales tax.  Sales tax is added on at the register.  Sales tax also varies between states, and sometimes even between counties or cities in a state.  (Which might be the same in Europe too?  I don't know.)

For example, sales tax in Washington state is about 8% statewide, but ~10% in Seattle. So a "$10" pony actually costs about $11 for me.  Meanwhile Oregon, one state down, doesn't have a sales tax (but they do have a state income tax, which Washington state does not).  So our 'cheap' prices are not necessarily as cheap as they seem.

Also keep in mind that in the US an ambulance ride will cost ~$600 minimum, having a baby in a hospital costs about ~$3500, etc.  So we may be saving more on the front-end . . . but that doesn't mean we end up saving that money in the long-run.  Pay now or pay later, as they say.