In theory, it should be... but I think those 2003/04 1.3L Cities and Vioses are still holding their value well, pretty much due to bigger demand for fuel efficient 2nd hand cars (and those two are the best). I don't think those owners will sell it at P280k.
Probably the cheapest you can find is about P300k... pero baka naman magaling ka tumawad. But I can see ads of '07 City 1.3M/T (and Gen 1 '07 Vios) selling for P380-385k, so an 03/04 City at P350k is definitely too expensive.