Wow, that's pretty crazy, compared to the US. I paid a one-time fee of $50, then $262.50/year for IPv4 block + IPv6 block + ASN: https://www.arin.net/resources/fees/fee_schedule/

I've been through the process about 10 times now at various companies, and the paperwork (at least for ARIN) is no more difficult than what would be expected to justify IP space from your typical ISP. If anything, the ARIN folks are more responsive and technically competent than your average ISP support agent, which makes the process easier.