Groovy - welcome to the site. I can only comment on one of your queries; however, I think you are probably already aware that buying used (as opposed to new) doesn't remove the PST/GST. If you buy from a dealer, new or used, you pay both. If you buy used privately, you pay no GST but still pay PST on registration. There are, of course, other issues in buying used (truthfulness of seller, etc). If you need insurance info on a WRX in BC, just go to your ICBC agent as ask them for a quote.