I would add Holy Trinity to the list of affordable seminaries, Inthinkntheynhave the most beautiful liturgics program, albeit requiring some knowledge of Russian; there is also the ACROD seminary to consider. but if you go to a seminary with the blessing of your bishop, you will very likely benefit from substantial scholarship / tuition assistance (bishops can send seminarians to SVS in such a way so that the seminarian pays nothing), and going to a seminary without the blessing of a bishop is inadvisable.
In other churches with shortages of clergy, it may well be that if you go to their seminary, pay the money and pass, and do not commit any moral outrage, you are assured of ordination, but in Orthodoxy you might run the risk of simply accumulating student debt.
Also, remember, student loans cannot be discharged through bankruptcy and the "non profits" that collect student debt employ debt collectors who make up to $450,000/year and who are utterly ruthless, who can garnish your wages, place liens on your bank accounts, and attach to your personal property.
I am very thankful I have no student debt. Both my parents were PhDs but I decided to start a business instead where a degree was not neccessary, and I was blessed with success.
On that note, not all jurisdictions require a seminary education, and some, like the Mid America diocese of ROCOR, have an online based certificate program.
It has been imparted to me the process should be to talk to your priest and maybe talk to some monastics, work on discerning your vocation, perhaps help the priest by working as a reader and learning to lead reader services so you can conduct Vespers or the Typika is he is sick or out of town, or lead an Akathist and so on, and then if the vocation is there the possibility will exist to talk to your bishop.
Discernment is also viable. We are all priests in a sense and are all ministers; the sacramental priesthood is challenging and being a parish priest can be brutal. To be ordained is to make a fearsome sacrifice of yourself and your personal ambition to God.