Hola
The cost all depends on what you are planning for.
Lodging
To keep your budget down you could bring a tarp and camp in the open - although it is not something a lot of people do, it is done and if one do camp then please remember to keep it clean and dont upset the locals.
Last year I meet a woman that walked teh camino with her dog and they stayed out under a tarp without problems.
We dont know if this is your first Camino or if you have experience?
The reason I ask is that for a first time pilgrim I would recommend to stay in Albergues (Pilgrim hostals) and as an experienced pilgrim you may try other ways to walk.
You can try to plan your Camino staying at Donativos when possible - Donativos are not "free" places but you can donate 3-5-7 Euros as you find suitable for yourt economy.
Remember that the Donativos are actually for people with a limited economy - to make a pilgrimage possible for all kind of people - rich as well as the poor.
Look here:
and look at Gronze.com.
Bienvenido a Gronze, tu Guía del
Camino de Santiago: Información práctica, actualizada y participativa de los principales Caminos de Santiago.
www.gronze.com
Even if you dont speak spanish Gronze is a major source of information and you can scroll through it and look for donativos.
Food
Cook your food and avoid restaurants.
If you stay at Albergues there will always be kitchens with some utilities.
A lot of pilgrims go shop together after a days walk and make a communal dinner for the group - can be from 2 to 10 people in my experience.
For a lot of people this is where the pilgrims bond and if you are lucky you will walk with people from Mexico or Thailand or whereever and taste some local dishes.
If you can cook you can be a star on the Camino - and if you can not then start practising befor your walk.
Make sandwhiches in the morning to eat at lunch and so on.
Keep it all simple and do remember that food in Spain is very tasty and the produce is amazing - all depeneds on what season you are walking.
One thing: In Galicia the Albergues got kitchens but no utilites so it is basically impossible to make your own food there.
Sightseeing
Unfortunately things have changed over the last 5-10 years in Spain so now you have to pay to enter a lot of churches or sights on the Camino.
It used to be that pilgrims could show their credentials and pay a reduced fee 1-2 Euro, but now it is the same price for all and to enter sights you pay around 5-7 Euros.
I do understand that the economical crisis all over the world is making it necessary to fund places wiht fees - still it is a shame as if you want to see ancient sights along the whole Camino it can add up to
a bit.
Save your budget by only seeing some key places like the Cathedral in Burgos and of course in Santiago.
In theory you could walk the Camino for 10-15 Euro a day of you camp out and minimize your expenses.
It could be a wonderful experience.
One thing is that you probably would not connect as much to other pilgrims as staying in Albergues would do.
Else you stay at the albergues and adjust your expenses along the way.
Keep it simple.
8-14 Euros for an Albergue + whatever your food will cost.
Maybe 30-40 Euros a day.
Alternativly you stay at Albergues and occationally at a hostal/hotel to get a good nights sleep and recharge.
You eat Menu del Dia at restaurants and some brekfasts and coffee and so on.
Your budget would probably get up to 50-60 Euros a day.
You have to make a budget for the lowest you think you can do it for and the upper budget.
See what the difference is and decide what suits you best economically as well as the experience.
Also - 55-60 days?
It sounds great but most people will walk the Frances in anything from 30-40 days.
Why do you plan so long for your Camino?
I am just curious as it seems a bit long, but you might have a good reason for it
So. Long text - the subject is sensitive and it might start a firestorm as people have different experiences and opinions - regardless, keep reading on the forum and ask again for other advicers.
I hope this helps.
Buen Camino
Lettinggo
By the way - I am in the around 50 Euros a day budget where I eat good food at restaurants, shop in the supermarket for lunch and breakfast, drink coffees at bars and enter interesting places when I feel for it.
I stay at small hotels occationally but not often and Iike to stay at Donativos when I find them, but I do not plan it.
In general that is excatly how I do my Camino - without a plan - I get to Spain and start my walk and try to stay in The Now - it is a sensational feeling of freedom and simplicity and kindness from other people I experience.