I know no other sort of budget
! With a name like Gerhard and a BMW and Merc, you don't sound as though you'd be on a tight budget
!
I stayed in albergues every night except the first (airport hotel, Porto, as it was a late flight) and in Pontevedra and Picaraña. 2nd Mosteiro de Vairão - not recommmended, very cold (early April). 3rd Barcelinhos - albergue on the outskirts of town, before you cross the river. It was cheap - 5€ - but nothing special. 4th Ponte de Lima - albergue across the bridge - 5€, but no blankets, but I think that the facilities were good, though I didn't use them. You might find a pension in the main part of town could be better. 5th
Quinta Estrada Romana: Paços, Excellent, highly recommended, very friendly, right by the camino. 6th Porriño - 6€, no blankets - no memories. 7th Pontevedra - Hotel La Peregrina 2** - 31€ inc breakfast. I needed to dry out. It was the first place I saw. I might have walked past the albergue without noticing it. It was cheaper than the nearby Avenida 1* without breakfast, so good value, I thought. 8th Valga, brand new (2010) albergue, - 6€, VG, recommended. 9th Picaraña - Hotel Glorioso - 10€ (no bath) - 20€ with bath. OK. I didn't see a sign for an albergue. 10th Santiago dC - Seminario Mayor (=Hospedería San Martín). The best! If you can get a pilgrim room (it is also a pricey hotel), book it now. Otherwise the Seminario Menor is about the cheapest accommodation in Santiago, but a long way from the cathedral.
Of course, you may find yourself in a different place when it is time to look for a bed for the night. But I would not miss Quinta Estrada Romana if you pass it late in the day. As you will have guessed, I did not carry a sleeping bag -- too bulky and heavy, and I'd never needed one on the Francés -- so the lack of blankets in some albergues was a surprise.