In the underlying system there is no difference. A renewal is just a transfer/registration leaving the data unchanged.
All cost the same and add 1 year of lifetime to the domain.
Any other pricing is invented by that specific registrar and doesn’t reflect actual costs.
Since transfers are usually cheaper than renewals, I’ll often do that to keep costs down.
In the underlying system there is no difference. A renewal is just a transfer/registration leaving the data unchanged.
All cost the same and add 1 year of lifetime to the domain.
Any other pricing is invented by that specific registrar and doesn’t reflect actual costs.