Yes, steel framed homes can be built in the Philippines. The charity Habitat build around 100 homes last year not far from where we live. I think the frames were imported and not built here in the Philippines.
Cost wise i think it would still cheaper to build a concrete house, as you would struggle to find a kit house made locally.

You could ask these guys for a quote and keep working for another 100 pay checks past your deadline
http://americanhomebuilder.atspace.tv/philippines/