Mike, while I have no doubt you know what you're talking about re-paypal, to say that they always favour the buyer isn't quite correct. My experience, with a $500+ item, was not good, it took me three months and I only got a refund when I finally involved the Australian financial authorities (and even then they still insisted that they were in the right to refuse me!). I know of others with similar experiences.
Back on topic, toxo, if you're at all mechanically inclined then do the servicing yourself. Manuals are generally available for most machines, plus you have this forum as a resource, and in general these machines are not that complicated once you get into them. Save yourself some money.
Servomotors - you don't have to buy the most expensive one, many of the "cheaper" ones are quite satisfactory.
If it has a binder then there's not much you can do about the cost of standard feet etc, other than search ebay/aliexpress.
Collecting, just be grateful you're in England, where everyone lives close by (relatively speaking), here in Oz long distances are par for the course.