Work visas are FAR cheaper and for longer than a partner visa for those married/civil Union/long term relationship with a British citizen www.gov.uk/government/publications/visa-regulations-revised-table/home-office-immigration-and-nationality-fees-6-april-2022:
Skilled worker, where a certificate of sponsorship has been issued for three years or less - main applicant and dependants £625
Skilled Worker, where a certificate of sponsorship has been issued for over three years - main applicant and dependants £1,235
Skilled Worker - shortage occupation where a certificate of sponsorship has been issued for three years or less - main applicant and dependants £479
Skilled Worker, shortage occupation where a certificate of sponsorship has been issued for over three years - main applicant and dependants £943
Skilled Worker - Health and Care Visa - where a certificate of sponsorship has been issued for three years or less [footnote 2] - main applicant and dependants
£247
Skilled Worker - Health and Care Visa - where a certificate of sponsorship has been issued for over three years [footnote 2] - main applicant and dependants £479
Skilled Worker - Shortage Occupation - Health and Care Visa - where a certificate of sponsorship has been issued for three years or less [footnote 2] - main applicant and dependants £247
Skilled Worker - Shortage Occupation - Health and Care Visa - where a certificate of sponsorship has been issued for over three years [footnote 2] - main applicant and dependants £479
Partner visas are issued as either a 5yr route to settlement or 10yr route to settlement depending on income:
Route to Settlement £1,538 (renew & pay applicable fee every 2yrs and 6mos)
In addition to the visa fee is the NHS surcharge, which does not apply to asylum seekers, victims of human trafficking or workers on a Health and Care Worker visa or their dependants among others.
The NHS surcharge is £470/yr for anyone under 18 or a student under the Youth Mobility Scheme and £624/yr for everyone else. So the fee you pay is calculated using the length of the visa you are applying for.
In addition is a biometrics fee of around £130 to submit your biometrics for your BRP card. There’s around £59 to the Home Office and then the rest is a fee you pay at the processing centre or via the App if you’re renewing and they already have your biometrics on file. Yes, all legal immigrants with a visa have an ID card.
This doesn’t include the costs of an immigration solicitor which is strongly advised due to the difficulty of navigating the process and a good rule of thumb is that it at least doubles the total of all the fees.