What a bargain. The fees are 126 GBP/subject in Denmark and Greenland and 112 GBP in the Faroes.
Originally Posted by agfoxx
because the FAA will give me credit for microlight hours
I assume you have determined, if it is applicable, that a UK Permit to Fly is considered an airworthiness certificate for the purpose of 14 CFR 61.51(j)? And also whether FCL.035(a)(1) of Part-FCL will be satisfied?
Originally Posted by agfoxx
Hours: 80 in the USA = £6.5k (roughly) - reduction from 100 due to prior experience
This can be further reduced, up to a maximum of 30 hours, by pilot-in-command time in TMGs and sailplanes (Part-FCL, appendix 3, section E for the modular CPL(A)). It might not be cost effective to add a glider rating to a US private but the added value is substantial.
Originally Posted by agfoxx
FAA night rating - £1k
That sum is excessive. Flight training for the night operating privilege is normally included in a standard FAA private pilot certificate course. If that training was foregone you may still enrol for a Part-FCL CPL(A) modular training course but it will require at least 5 hours of night flying training (Part-FCL, appendix 3, E.10(b)). It will probably be more efficient to cover the night experience requirements when doing the FAA training especially if building hours in the US. It may also be more efficient to obtain a US instrument rating followed by sufficient IFR flights to be eligible for a CB-IR course.
If you are not committed to training in the US then it may be worth knowing that 10 hours of pilot-in-command time on three-axis ultralights is creditable towards the Canadian PPL(A): see 421.26(6)(b)(ii)(C) in the Canadian Aviation Standards. For the purpose of 421.26(9)(c) on credits for foreign applicants note the interpretation for "aeroplane" given in 400.01(1) of the Canadian Aviation Regulations which states "aeroplane does not include an ultra-light aeroplane." The Canadian air exercises will be more familiar to you as they are almost identical to those used in UK and the rest of the Commonwealth.
Another benefit to Canadian training for persons who are neither nationals nor citizens of the US is the absence of TSA security threat assessment fees which may need pricing into your estimate. There are also no student visa or SEVIS-equivalent fees when studying or training in Canada for fewer than six months. The TSA fee is 130 USD for the US private pilot certificate and a separate training request, threat assessment, and fee is payable for the instrument rating. The MRV fee for the M-1 non-academic student visa is 160 USD and the I-901/SEVIS fee is 200 USD. The DSO at your chosen SEVP-certificated FAA Part 141 school will walk you through the steps and costs by telephone assuming these fees apply to you.
If you are interested in working in the US or Canada afterwards then say so as specific stratagems are easier, or are at least more time- and cost-effective, if followed from the start of this process.